Byzantine Empire

Roman Empire Βασιλεία Ῥωμαίων, Ῥωμανία Basileia Rhōmaiōn, Rhōmanía Imperium Romanum, Romania
395–1453
Flag of the Empire (14th century) Imperial emblem under the Palaiologoi
The Empire at its greatest extent under Justinian in 550
Capital	Constantinople1
Language(s)	Medieval Greek, Latin
Religion	Roman paganism until 391, Eastern Orthodox Christianity tolerated after the Edict of Milan in 313 and state religion after 380
Government	Autocracy
Emperor
- 395–408	Arcadius
- 1449–1453	Constantine XI
Legislature	Byzantine Senate
Historical era	Late Antiquity–Late Middle Ages
- Diocletian splits imperial administration between east and west	285
- Death of Theodosius I	January 17, 395
- The deposition of Romulus Augustulus, nominal emperor in the west, brings formal division of the Roman Empire to an end	476
- Pope Leo III, hostile to the rule of the Empress Irene, attempts to confer imperial authority on the Frankish king Charlemagne	800
- East-West Schism	1054
- Fall of Constantinople to the Fourth Crusade	1204
- Fall of Constantinople3	May 29, 1453
- Fall of Trebizond	1460
Population
- 565 AD4 est.	26,000,000
- 780 AD est.	7,000,000
- 1025 AD4 est.	12,000,000
- 1143 AD4 est.	10,000,000
- 1282 AD est.	5,000,000
Currency	Solidus, Hyperpyron
Today part of	Countries today  Albania  Algeria  Armenia  Bosnia and Herzegovina  Bulgaria  Croatia  Cyprus  Egypt  France  Georgia  Gibraltar (UK)  Greece  Italy  Iraq  Israel  Jordan  Kosovo5  Lebanon  Libya  Macedonia  Malta  Moldova  Montenegro  Morocco  Northern Cyprus  Palestine  Romania  San Marino  Saudi Arabia  Serbia  Slovenia  Spain  Sudan  Syria  Tunisia  Turkey  Ukraine  Vatican City
1 Constantinople (330–1204 and 1261–1453). The capital of the Empire of Nicaea, the empire after the Fourth Crusade, was at Nicaea, present day İznik, Turkey. 2 Establishment date traditionally considered to be the re-founding of Constantinople as the capital of the Roman Empire (324/330) although other dates are often used.[1] 3Date of end universally regarded as 1453, despite the temporary survival of remnants in Morea and Trebizond.[1] 4 See Population of the Byzantine Empire for more detailed figures taken provided by McEvedy and Jones, "Atlas of World Population History", 1978, as well as Angeliki E. Laiou, "The Economic History of Byzantium", 2002. 5Kosovo is the subject of a territorial dispute between the Republic of Serbia and the self-proclaimed Republic of Kosovo. The latter declared independence on 17 February 2008, while Serbia claims it as part of its own sovereign territory. Its independence is recognised by 86 UN member states.

The Byzantine Empire (or Byzantium) was the Eastern Roman Empire during the periods of Late Antiquity and the Middle Ages, centred on the capital of Constantinople. Known simply as the "Roman Empire" (Greek: Βασιλεία Ῥωμαίων, Basileia Rhōmaiōn)^[2] or Romania (Ῥωμανία) to its inhabitants and neighbours, it was the direct continuation of the Ancient Roman State and maintained Roman state traditions.^[3][4] Byzantium is today distinguished from ancient Rome proper insofar as it was oriented towards Greek culture, characterised by Christianity rather than Roman paganism and was predominantly Greek-speaking rather than Latin-speaking.^[3]

As the distinction between Roman Empire and Byzantine Empire is largely a modern convention, it is not possible to assign a date of separation, but an important point is Emperor Constantine I's transfer in 324 of the capital from Nicomedia (in Anatolia) to Byzantium on the Bosphorus, which became Constantinople, "City of Constantine" (alternatively "New Rome").^{[n 1]} The Roman Empire was finally divided in 395 AD after the death of Emperor Theodosius I (r. 379–395), thus this date is also very important if the Byzantine Empire (or Eastern Roman Empire) is looked upon as completely separated from the West. The transition to Byzantine history proper finally begins during the reign of Emperor Heraclius (r. 610–641), since Heraclius effectively established a new state after reforming the army and administration by introducing themes and by replacing the official language of the Empire from Latin to Greek.^[6]

The Byzantine Empire existed for more than a thousand years, from its genesis in the 4th century to 1453. During most of its existence, it remained one of the most powerful economic, cultural, and military forces in Europe, despite setbacks and territorial losses, especially during the Roman-Persian and Byzantine-Arab Wars. The Empire recovered during the Macedonian dynasty, rising again to become a preeminent power in the Eastern Mediterranean by the late 10th century, rivalling the Fatimid Caliphate.

After 1071, however, much of Asia Minor, the Empire's heartland, was lost to the Seljuk Turks. The Komnenian restoration regained some ground and briefly reestablished dominance in the 12th century, but following the death of Emperor Andronikos I Komnenos (r. 1183–1185) and the end of the Komnenos dynasty in the late 12th century the Empire declined again. The Empire received a mortal blow in 1204 from the Fourth Crusade, when it was dissolved and divided into competing Byzantine Greek and Latin realms.

Despite the eventual recovery of Constantinople and re-establishment of the Empire in 1261, under the Palaiologan emperors, Byzantium remained only one of many rival states in the area for the final 200 years of its existence. However, this period was the most culturally productive time in the Empire.^[4]

Successive civil wars in the 14th century further sapped the Empire's strength, and most of its remaining territories were lost in the Byzantine-Ottoman Wars, which culminated in the Fall of Constantinople and the conquest of remaining territories by the Ottoman Empire in the 15th century.

Contents 1 Nomenclature 2 History 2.1 Early history of the Roman Empire 2.2 Division of the Roman Empire 2.3 Reconquest of the western provinces 2.4 Shrinking borders 2.4.1 Heraclian dynasty 2.4.2 Isaurian dynasty to the ascension of Basil I 2.5 Macedonian dynasty and resurgence 2.5.1 Wars against the Muslims 2.5.2 Wars against the Bulgarian Empire 2.5.3 Relations with the Kievan Rus' 2.5.4 The apex 2.6 Crisis and fragmentation 2.7 Komnenian dynasty and the crusaders 2.7.1 Alexios I and the First Crusade 2.7.2 John II, Manuel I and the Second Crusade 2.7.3 Twelfth century Renaissance 2.8 Decline and disintegration 2.8.1 Dynasty of the Angeloi 2.8.2 Fourth Crusade 2.9 Fall 2.9.1 Empire in exile 2.9.2 Reconquest of Constantinople 2.9.3 Rise of the Ottomans and fall of Constantinople 2.10 Aftermath 3 Culture 3.1 Economy 3.2 Science, medicine, law 3.3 Religion 3.4 Art and literature 3.5 Government and bureaucracy 3.6 Diplomacy 3.7 Language 4 Legacy 5 See also 6 Annotations 7 Notes 8 References 8.1 Primary sources 8.2 Secondary sources 9 Further reading 10 External links 10.1 Byzantine studies, resources and bibliography 10.2 Miscellaneous

Nomenclature

The designation of the Empire as Byzantine began in Western Europe in 1557, when German historian Hieronymus Wolf published his work Corpus Historiæ Byzantinæ, a collection of historical sources. The term comes from Byzantium, the name of the city of Constantinople before it became the capital of Constantine. This older name of the city would rarely be used from this point onward except in historical or poetic contexts. The publication in 1648 of the Byzantine du Louvre (Corpus Scriptorum Historiæ Byzantinæ), and in 1680 of Du Cange's Historia Byzantina further popularised the use of Byzantine among French authors, such as Montesquieu.^[7] The term then disappears until the 19th century when it came into general use in the Western world.^[8] Before this time, Greek had been used for the Empire and its descendants within the Ottoman Empire.

The Byzantine Empire was known to its inhabitants as the Roman Empire, the Empire of the Romans (Latin: Imperium Romanum, Imperium Romanorum, Greek: Βασιλεία τῶν Ῥωμαίων, Basileía tôn Rhōmaíōn, Ἀρχὴ τῶν Ῥωμαίων, Arche tôn Rhōmaíōn), Romania^{[n 2]} (Latin: Romania, Greek: Ῥωμανία, Rhōmanía), the Roman Republic (Latin: Res Publica Romana, Greek: Πολιτεία τῶν Ῥωμαίων, Politeίa tôn Rhōmaíōn),^[10] Graikía (Greek: Γραικία),^[11] and also as Rhōmaís (Greek: Ῥωμαΐς).^[12]

Although the Byzantine Empire had a multi-ethnic character during most of its history^[13] and preserved Romano-Hellenistic traditions,^[14] it became identified by its western and northern contemporaries'^{[n 3]} with its increasingly predominant Greek element.^[15] The occasional use of the term Empire of the Greeks (Latin: Imperium Graecorum) in the West to refer to the Eastern Roman Empire and of the Byzantine Emperor as Imperator Graecorum (Emperor of the Greeks)^[16] were also used to separate it from the prestige of the Roman Empire within the new kingdoms of the West.^[17] The authority of the Byzantine emperor as the legitimate Roman emperor, was challenged by the coronation of Charlemagne as Imperator Augustus by Pope Leo III in the year 800. Needing Charlemagne's support in his struggle against his enemies in Rome, Leo used the lack of a male occupant of the throne of the Roman Empire at the time to claim that it was vacant and that he could therefore crown a new Emperor himself.^[18] Whenever the Popes or the rulers of the West made use of the name Roman to refer to the Eastern Roman Emperors, they preferred the term Imperator Romaniæ instead of Imperator Romanorum, a title that Westerners maintained applied only to Charlemagne and his successors.^[19]

No such distinction existed in the Persian, Islamic, and Slavic worlds, where the Empire was more straightforwardly seen as the continuation of the Roman Empire. In the Islamic world it was known primarily as روم (Rûm "Rome").^[20][21]

In modern historical works, the Empire is usually called the Eastern Roman Empire in the context of the period 395 to 610, before Emperor Heraclius changed the official language from Latin to Greek (already the language known by the great majority of the population). In contexts after 610, the term Byzantine Empire is used more regularly.

History

Early history of the Roman Empire

The Roman army succeeded in conquering a vast collection of territories covering the entire Mediterranean region and much of Western Europe. These territories consisted of many different cultural groups, ranging from primitive to highly sophisticated. Generally speaking, the eastern Mediterranean provinces were more urbanised and socially developed, having previously been united under the Macedonian Empire and Hellenised by the influence of Greek culture. In contrast, the western regions had mostly remained independent from any single cultural or political authority, and were still largely rural and less developed. This distinction between the established Hellenised East and the younger Latinised West persisted and became increasingly important in later centuries.^[22]

Division of the Roman Empire

In 293, Diocletian created a new administrative system, (the tetrarchy).^[23] He associated himself with a co-emperor, or Augustus. Each Augustus was then to adopt a young colleague given the title of Caesar, to share in their rule and eventually to succeed the senior partner. After the abdication of Diocletian and Maximian, however, the tetrarchy collapsed, and Constantine I replaced it with the dynastic principle of hereditary succession.^[24]

Constantine moved the seat of the Empire and introduced important changes into its civil and religious constitution.^[25] In 330, he founded Constantinople as a second Rome on the site of Byzantium, which was well-positioned astride the trade routes between East and West.

Constantine built upon the administrative reforms introduced by Diocletian.^[23][26] He stabilised the coinage (the gold solidus that he introduced became a highly prized and stable currency),^[26] and made changes to the structure of the army. Under Constantine, the Empire had recovered much of its military strength and enjoyed a period of stability and prosperity.

Under Constantine, Christianity did not become the exclusive religion of the state, but enjoyed imperial preference, because the Emperor supported it with generous privileges. Constantine established the principle that emperors should not settle questions of doctrine, but should summon general ecclesiastical councils for that purpose. The Synod of Arles was convened by Constantine, and the First Council of Nicaea showcased his claim to be head of the Church.^[28]

The state of the Empire in 395 may be described in terms of the outcome of Constantine's work. The dynastic principle was established so firmly that the emperor who died in that year, Theodosius I, bequeathed the imperial office jointly to his sons: Arcadius in the East and Honorius in the West. Theodosius was the last emperor to rule over the undivided empire.^[29]

The Eastern Empire was largely spared the difficulties faced by the West in the 3rd and 4th centuries, due in part to a more established urban culture and greater financial resources which allowed it to placate invaders with tribute and pay foreign mercenaries. Theodosius II further fortified the walls of Constantinople, leaving the city impervious to most attacks. The walls were not breached until 1204. In order to fend off the Huns, Theodosius paid a tribute (purportedly 300 kg (661.39 lb) of gold).^[30]

His successor, Marcian, refused to continue to pay this exorbitant sum. Fortunately Attila had already diverted his attention to the Western Roman Empire.^[31] After he died in 453, the Hunnic Empire collapsed; many of the remaining Huns were often hired as mercenaries by Constantinople.^[32]

After the fall of Attila, the Eastern Empire enjoyed a period of peace, while the Western Empire collapsed (its end is usually dated in 476 when the Germanic Roman general Odoacer deposed the titular Western Emperor Romulus Augustulus).

To recover Italy, Emperor Zeno negotiated with the invading Ostrogoths, who had settled in Moesia. He sent the Gothic King Theodoric to Italy as magister militum per Italiam ("commander in chief for Italy") in order to depose Odoacer. By urging Theodoric into conquering Italy, Zeno rid the Eastern Empire of an unruly subordinate and gained at least a nominal form of supremacy over Italy.^[29] After Odoacer's defeat in 493, Theodoric ruled Italy on his own.

In 491, Anastasius I, an aged civil officer of Roman origin, became Emperor, but it was not until 498 that the forces of the new emperor effectively took the measure of Isaurian resistance.^[29] Anastasius revealed himself to be an energetic reformer and an able administrator. He perfected Constantine I's coinage system by definitively setting the weight of the copper follis, the coin used in most everyday transactions.^[33] He also reformed the tax system and permanently abolished the chrysargyron tax. The State Treasury contained the enormous sum of 320,000 lbs (145,150 kg) of gold when Anastasius died in 518.^[34]

Reconquest of the western provinces

Justinian I, who assumed the throne in 527, oversaw a period of recovery of former territories. Justinian, the son of an Illyrian peasant, may already have exerted effective control during the reign of his uncle, Justin I (518–527).^[35] In 532, attempting to secure his eastern frontier, Justinian signed a peace treaty with Khosrau I of Persia agreeing to pay a large annual tribute to the Sassanids. In the same year, Justinian survived a revolt in Constantinople (the Nika riots) which ended with the deaths of a reported 30,000 to 35,000 rioters, on his orders.^[36] This victory solidified Justinian's power.^[37] Pope Agapetus I was sent to Constantinople by the Ostrogothic king Theodahad, but failed in his mission to sign a peace with Justinian. However, he succeeded in having the Monophysite Patriarch Anthimus I of Constantinople denounced, despite Empress Theodora's support.

The western conquests began in 533, as Justinian sent his general Belisarius to reclaim the former province of Africa from the Vandals who had been in control since 429 with their capital at Carthage.^[38] Their success came with surprising ease, but it was not until 548 that the major local tribes were subdued.^[37] In Ostrogothic Italy, the deaths of Theodoric the Great, his nephew and heir Athalaric, and his daughter Amalasuntha had left her murderer Theodahad on the throne despite his weakened authority. In 535, a small Byzantine expedition to Sicily was met with easy success, but the Goths soon stiffened their resistance, and victory did not come until 540, when Belisarius captured Ravenna, after successful sieges of Naples and Rome.^[39]

The Ostrogoths were united under the command of King Totila and captured Rome on 17 December 546. Justinian eventually called back Belisarius to Constantinople in early 549 from Ravenna.^[40] The arrival of the Armenian eunuch Narses in Italy (late 551) with an army of some 35,000 men marked another shift in Gothic fortunes. Totila was defeated at the Battle of Busta Gallorum and his successor, Teia, was defeated at the Battle of Mons Lactarius (October 552). Despite continuing resistance from a few Gothic garrisons and two subsequent invasions by the Franks and Alamanni, the war for the Italian peninsula was at an end.^[41] In 551, Athanagild,a noble from Visigothic Hispania, sought Justinian's help in a rebellion against the king, and the emperor dispatched a force under Liberius, a successful military commander. The Empire held on to a small slice of the Iberian Peninsula coast until the reign of Heraclius.^[42]

In the east, the Roman-Persian Wars continued until 561 when Justinian's and Khosrau's envoys agreed on a 50-year peace. By the mid-550s, Justinian had won victories in most theatres of operation, with the notable exception of the Balkans, which were subjected to repeated incursions from the Slavs. In 559, the Empire faced a great invasion of Kutrigurs and Sclaveni. Justinian called Belisarius out of retirement and defeated the new Hunnish threat. The strengthening of the Danube fleet caused the Kutrigur Huns to withdraw and they agreed to a treaty which allowed them safe passage back across the Danube.

In 529, a ten-man commission chaired by Tribonian revised the ancient Roman legal code and created the new Codex Justinianus, a condensed version of previous legal texts. In 534, the Codex Justinianus was updated and reorganised into the system of law used for the rest of the Byzantine era.^[43] These legal reforms, along with the many other changes to the law became known as the Corpus Juris Civilis.

During the 6th century, the traditional Greco-Roman culture was still influential in the Eastern empire with prominent representatives such as the natural philosopher John Philoponus. Nevertheless, Christian philosophy and culture were dominant and began to replace the older culture. Hymns written by Romanos the Melodist marked the development of the Divine Liturgy, while architects and builders worked to complete the new Church of the Holy Wisdom, Hagia Sophia, which was designed to replace an older church destroyed during the Nika Revolt. The Hagia Sophia stands today as one of the major monuments of Byzantine architectural history.^[29] During the 6th and 7th centuries, the Empire was struck by a series of epidemics, which greatly devastated the population and contributed to a significant economic decline and a weakening of the Empire.^[44]

After Justinian died in 565, his successor, Justin II refused to pay the large tribute to the Persians. Meanwhile, the Germanic Lombards invaded Italy; by the end of the century only a third of Italy was in Byzantine hands. Justin's successor, Tiberius II, choosing between his enemies, awarded subsidies to the Avars while taking military action against the Persians. Though Tiberius' general, Maurice, led an effective campaign on the eastern frontier, subsidies failed to restrain the Avars. They captured the Balkan fortress of Sirmium in 582, while the Slavs began to make inroads across the Danube. Maurice, who meanwhile succeeded Tiberius, intervened in a Persian civil war, placed the legitimate Khosrau II back on the throne and married his daughter to him. Maurice's treaty with his new brother-in-law brought a new status-quo to the east territorially, enlarged to an extent never before achieved by the Empire in its six century history, and much cheaper to defend during this new perpetual peace – millions of solidi were saved by the remission of tribute to the Persians alone. After his victory on the eastern frontier, Maurice was free to focus on the Balkans, and by 602 after a series of successful campaigns he had pushed the Avars and Slavs back across the Danube.^[29]

Shrinking borders

Heraclian dynasty

After Maurice's murder by Phocas, Khosrau used the pretext to reconquer the Roman province of Mesopotamia.^[45] Phocas, an unpopular ruler who was invariably described in Byzantine sources as a "tyrant", was the target of a number of Senate-led plots. He was eventually deposed in 610 by Heraclius, who sailed to Constantinople from Carthage with an icon affixed to the prow of his ship.^[46] Following the ascension of Heraclius, the Sassanid advance pushed deep into Asia Minor, also occupying Damascus and Jerusalem and removing the True Cross to Ctesiphon.^[47] The counter-offensive of Heraclius took on the character of a holy war, and an acheiropoietos image of Christ was carried as a military standard.^[48] (similarly, when Constantinople was saved from an Avar siege in 626, the victory was attributed to the icons of the Virgin which were led in procession by Patriarch Sergius about the walls of the city).^[49] The main Sassanid force was destroyed at Nineveh in 627, and in 629 Heraclius restored the True Cross to Jerusalem in a majestic ceremony.^[50] The war had exhausted both the Byzantine and Sassanid Empire, and left them extremely vulnerable to the Arab Muslim forces which emerged in the following years.^[51] The Romans suffered a crushing defeat by the Arabs at the Battle of Yarmuk in 636, and Ctesiphon fell in 634.^[52]

The Arabs, now firmly in control of Syria and the Levant, sent frequent raiding parties deep into Anatolia, and between 674 and 678 laid siege to Constantinople itself. The Arab fleet was finally repulsed through the use of Greek fire, and a thirty-years' truce was signed between the Empire and Ummayyad Caliphate.^[53] The Anatolian raids continued unabated, and accelerated the demise of classical urban culture, with the inhabitants of many cities either refortifying much smaller areas within the old city walls, or relocating entirely to nearby fortresses.^[54] Constantinople itself dropped substantially in size, from 500,000 inhabitants to just 40,000–70,000, as the city lost the free grain shipments in 618 after the loss of Egypt to the Persians (province was regained in 629, but lost to Arab invaders in 642).^[55] The void left by the disappearance of the old semi-autonomous civic institutions was filled by the theme system, which entailed the division of Anatolia into "provinces" occupied by distinct armies which assumed civil authority and answered directly to the imperial administration. This system may have had its roots in certain ad hoc measures taken by Heraclius, but over the course of the 7th century it developed into an entirely new system of Imperial governance.^[56]

The withdrawal of large numbers of troops from the Balkans to combat the Persians and then the Arabs in the east opened the door for the gradual southward expansion of Slavic peoples into the peninsula, and, as in Anatolia, many cities shrank to small fortified settlements.^[57] In the 670s, the Bulgarians were pushed south of the Danube by the arrival of the Khazars, and in 680 Byzantine forces which had been sent to disperse these new settlements were defeated. In the next year, Constantine IV signed a treaty with the Bulgarian khan Asparukh, and the new Bulgarian state assumed sovereignty over a number of Slavic tribes which had previously, at least in name, recognised Byzantine rule.^[58] In 687–688, the emperor Justinian II led an expedition against the Slavs and Bulgarians which made significant gains, although the fact that he had to fight his way from Thrace to Macedonia demonstrates the degree to which Byzantine power in the north Balkans had declined.^[59]

The final Heraclian emperor, Justinian II, attempted to break the power of the urban aristocracy through severe taxation and the appointment of "outsiders" to administrative posts. He was driven from power in 695, and took shelter first with the Khazars and then with the Bulgarians. In 705, he returned to Constantinople with the armies of the Bulgarian khan Tervel, retook the throne, and instituted a reign of terror against his enemies. With his final overthrow in 711, supported once more by the urban aristocracy, the Heraclian dynasty came to an end.^[60]

Isaurian dynasty to the ascension of Basil I

Leo III the Isaurian turned back the Muslim assault in 718, and achieved victory with the major help of the Bulgarian khan Tervel, who killed 32,000 Arabs with his army. He also addressed himself to the task of reorganising and consolidating the themes in Asia Minor. His successor, Constantine V, won noteworthy victories in northern Syria, and thoroughly undermined Bulgar strength.

Taking advantage of the Empire's weakness after the revolt of Thomas the Slav in the early 820s, the Arabs captured Crete, and successfully attacked Sicily, but on 3 September 863, general Petronas gained a huge victory against Umar al-Aqta, the emir of Melitene. Under the leadership of Bulgarian Emperor Krum, the Bulgarian threat also reemerged, but in 814 Krum's son, Omortag, arranged a peace with the Byzantine Empire.^[61]

The 8th and 9th centuries were also dominated by controversy and religious division over Iconoclasm. Icons were banned by Leo and Constantine, leading to revolts by iconodules (supporters of icons) throughout the empire. After the efforts of Empress Irene, the Second Council of Nicaea met in 787, and affirmed that icons could be venerated but not worshipped. Irene is said to have endeavoured to negotiate a marriage between herself and Charlemagne, but, according to Theophanes the Confessor, the scheme was frustrated by Aetios, one of her favourites.^[62] In 813, Emperor Leo V the Armenian restored the policy of iconoclasm, but in 843 Empress Theodora restored the veneration of the icons with the help of Patriarch Methodios.^[63] Iconoclasm played its part in the further alienation of East from West, which worsened during the so-called Photian Schism, when Pope Nicholas I challenged Photios's elevation to the patriarchate.

Macedonian dynasty and resurgence

The Byzantine Empire reached its height under the Macedonian emperors of the late 9th, 10th, and early 11th centuries, when it gained control over the Adriatic Sea, southern Italy, and all of the territory of the tsar Samuel. The cities of the Empire expanded, and affluence spread across the provinces because of the new-found security. The population rose, and production increased, stimulating new demand while also helping to encourage trade. Culturally, there was considerable growth in education and learning (the "Macedonian Renaissance"). Ancient texts were preserved and patiently re-copied. Byzantine art flourished, and brilliant mosaics graced the interiors of the many new churches.Though the Empire was significantly smaller than during the reign of Justinian, it was also stronger, as the remaining territories were less geographically dispersed and more politically and culturally integrated.

Wars against the Muslims

By 867, the Byzantine Empire had re-stabilised its position in both the east and the west, and the efficiency of its defensive military structure enabled its emperors to begin planning wars of reconquest in the east.

The process of reconquest began with mixed fortunes. The temporary reconquest of Crete (843) was followed by a crushing Byzantine defeat on the Bosporus, while the emperors were unable to prevent the ongoing Muslim conquest of Sicily (827–902). Using present day Tunisia as their launching pad, the Muslims conquered Palermo in 831, Messina in 842, Enna in 859, Syracuse in 878, Catania in 900 and the final Byzantine stronghold, the fortress of Taormina, in 902.

These drawbacks were later counterbalanced by a victorious expedition against Damietta in Egypt (856), the defeat of the Emir of Melitene (863), the confirmation of the imperial authority over Dalmatia (867), and Basil I's offensives towards the Euphrates (870s). Unlike the deteriorating situation in Sicily, Basil I handled the situation in southern Italy well enough and the province would remain in Byzantine hands for the next 200 years.

In 904, disaster struck the Empire when its second city, Thessaloniki, was sacked by an Arab fleet led by the Byzantine renegade Leo of Tripoli. The Byzantine military responded by destroying an Arab fleet in 908, and sacking the city of Laodicea in Syria two years later. Despite this revenge, the Byzantines were still unable to strike a decisive blow against the Muslims, who inflicted a crushing defeat on the imperial forces when they attempted to regain Crete in 911.

The situation on the border with the Arab territories remained fluid, with the Byzantines alternatively on the offensive or defensive. The Varangians, who attacked Constantinople for the first time in 860, constituted another new challenge. In 941, they appeared on the Asian shore of the Bosporus, but this time they were crushed, showing the improvements in the Byzantine military position after 907, when only diplomacy had been able to push back the invaders. The vanquisher of the Varangians was the famous general John Kourkouas, who continued the offensive with other noteworthy victories in Mesopotamia (943): these culminated in the reconquest of Edessa (944), which was especially celebrated for the return to Constantinople of the venerated Mandylion.

The soldier-emperors Nikephoros II Phokas (reigned 963–969) and John I Tzimiskes (969–976) expanded the empire well into Syria, defeating the emirs of north-west Iraq and reconquering Crete and Cyprus. At one point under John, the Empire's armies even threatened Jerusalem, far to the south. The emirate of Aleppo and its neighbours became vassals of the Empire in the east, where the greatest threat to the empire was the Fatimid caliphate.^[64] After much campaigning, the last Arab threat to Byzantium was defeated when Basil II rapidly drew 40,000 mounted soldiers to relieve Roman Syria. With a surplus of resources and victories thanks to the Bulgar and Syrian campaigns, Basil II planned an expedition against Sicily to re-take it from the Arabs there. After his death in 1025, the expedition set off in the 1040s and was met with initial, but stunted success.

Wars against the Bulgarian Empire

The traditional struggle with the See of Rome continued, spurred by the question of religious supremacy over the newly Christianised Bulgaria. This prompted an invasion by the powerful Tsar Simeon I in 894, but this was pushed back by Byzantine diplomacy, which called on the help of the Hungarians. The Byzantines were in turn defeated, however, at the Battle of Bulgarophygon (896), and obliged to pay annual subsides to the Bulgarians. Later (912), Simeon even had the Byzantines grant him the crown of basileus (emperor) of Bulgaria and had the young emperor Constantine VII marry one of his daughters. When a revolt in Constantinople halted his dynastic project, he again invaded Thrace and conquered Adrianople.^[64]

A great imperial expedition under Leo Phocas and Romanos Lekapenos ended again with a crushing Byzantine defeat at the Battle of Acheloos (917), and the following year the Bulgarians were free to ravage northern Greece as far as Corinth. Adrianople was captured again in 923 and in 924 a Bulgarian army laid siege to Constantinople. The situation in the Balkans improved only after Simeon's death in 927. In 968, Bulgaria was overrun by the Rus' under Sviatoslav I of Kiev, but three years later, Emperor John I Tzimiskes defeated the Rus' and re-incorporated eastern Bulgaria into the Byzantine Empire.

Bulgarian resistance revived under the rule of the Cometopuli dynasty, but the new emperor Basil II (reigned 976–1025) made the submission of the Bulgarians his primary goal. Basil's first expedition against Bulgaria, however, resulted in a humiliating defeat at the Gates of Trajan. For the next few years, the emperor would be preoccupied with internal revolts in Anatolia, while the Bulgarians expanded their realm in the Balkans. The war was to drag on for nearly twenty years. The Byzantine victories of Spercheios and Skopje decisively weakened the Bulgarian army, and in annual campaigns, Basil methodically reduced the Bulgarian strongholds. Eventually, at the Battle of Kleidion in 1014 the Bulgarians were completely defeated.^[65] The Bulgarian army was captured, and it is said that 99 out of every 100 men were blinded, with the remaining hundredth man left with one eye so as to lead his compatriots home. When Tsar Samuil saw the broken remains of his once gallant army, he died of shock. By 1018, the last Bulgarian strongholds had surrendered, and the country became part of the Empire. This victory restored the Danube frontier, which had not been held since the days of the emperor Heraclius.^[64]

Relations with the Kievan Rus'

Between 850 and 1100, the Empire developed a mixed relationship with a new state that emerged to the north across the Black Sea, that of the Kievan Rus'. This relationship would have long-lasting repercussions in the history of the East Slavs. The Empire quickly became the main trading and cultural partner for Kiev, but relations were not always friendly. The most serious conflict between the two powers was the war of 968–971 in Bulgaria, but several Rus' raiding expeditions against the Byzantine cities of the Black Sea coast and Constantinople itself are also recorded. Although most were repulsed, they were concluded by trade treaties that were generally favourable to the Rus'.

Rus'-Byzantine relations became closer following the marriage of the porphyrogenita Anna to Vladimir the Great, and the subsequent Christianisation of the Rus': Byzantine priests, architects and artists were invited to work on numerous cathedrals and churches around Rus', expanding Byzantine cultural influence even further. Numerous Rus' served in the Byzantine army as mercenaries, most notably as the famous Varangian Guard.

The apex

The Byzantine Empire then stretched from Armenia in the east to Calabria in Southern Italy in the west.^[64] Many successes had been achieved, ranging from the conquest of Bulgaria, to the annexation of parts of Georgia and Armenia, to the total annihilation of an invading force of Egyptians outside Antioch. Yet even these victories were not enough; Basil considered the continued Arab occupation of Sicily to be an outrage. Accordingly, he planned to reconquer the island, which had belonged to the Roman world since the First Punic War. However, his death in 1025 put an end to the project.^[64]

The 11th century was also momentous for its religious events. In 1054, relations between the Eastern and Western traditions within the Christian Church reached a terminal crisis. Although there was a formal declaration of institutional separation, on July 16, when three papal legates entered the Hagia Sophia during Divine Liturgy on a Saturday afternoon and placed a bull of excommunication on the altar, the so-called Great Schism was actually the culmination of centuries of gradual separation.

Crisis and fragmentation

The Empire soon fell into a period of difficulties, caused to a large extent by the undermining of the theme system and the neglect of the military. Nikephoros II (reigned 963–969), John Tzimiskes and Basil II changed the military divisions (τάγματα, tagmata) from a rapid response, primarily defensive, citizen army into a professional, campaigning army increasingly manned by mercenaries. Mercenaries, however, were expensive and as the threat of invasion receded in the 10th century, so did the need for maintaining large garrisons and expensive fortifications.^[66] Basil II left a burgeoning treasury upon his death, but neglected to plan for his succession. None of his immediate successors had any particular military or political talent and the administration of the Empire increasingly fell into the hands of the civil service. Efforts to revive the Byzantine economy only resulted in inflation and a debased gold coinage. The army was now seen as both an unnecessary expense and a political threat. Therefore, native troops were cashiered and replaced by foreign mercenaries on specific contract.^[67]

At the same time, the Empire was faced with new enemies. Provinces in southern Italy faced the Normans, who arrived in Italy at the beginning of the 11th century. During a period of strife between Constantinople and Rome which ended in the East-West Schism of 1054, the Normans began to advance, slowly but steadily, into Byzantine Italy.^[68] Reggio, the capital of the tagma of Calabria, was captured in 1060 by Robert Guiscard, followed by Otranto in 1068. Bari, the main Byzantine stronghold in Apulia, was besieged in August 1068 and fell in April 1071.^[69] The Byzantines also lost their influence over the Dalmatian coastal cities to Peter Krešimir IV of Croatia in 1069.^[70]

It was in Asia Minor, however, that the greatest disaster would take place. The Seljuq Turks made their first explorations across the Byzantine frontier into Armenia in 1065 and in 1067. The emergency lent weight to the military aristocracy in Anatolia who, in 1068, secured the election of one of their own, Romanos Diogenes, as emperor. In the summer of 1071, Romanos undertook a massive eastern campaign to draw the Seljuks into a general engagement with the Byzantine army. At Manzikert, Romanos not only suffered a surprise defeat at the hands of Sultan Alp Arslan, but was also captured. Alp Arslan treated him with respect, and imposed no harsh terms on the Byzantines.^[67] In Constantinople, however, a coup took place in favour of Michael Doukas, who soon faced the opposition of Nikephoros Bryennios and Nikephoros Botaneiates. By 1081, the Seljuks expanded their rule over virtually the entire Anatolian plateau from Armenia in the east to Bithynia in the west and founded their capital at Nicaea, just 90 km from Constantinople.^[71]

Komnenian dynasty and the crusaders

The period from about 1081 to about 1185 is often known as the Komnenian or Comnenian period, after the Komnenos dynasty. Together, the five Komnenian emperors (Alexios I, John II, Manuel I, Alexios II and Andronikos I) ruled for 104 years, presiding over a sustained, though ultimately incomplete, restoration of the military, territorial, economic and political position of the Byzantine Empire. The Empire under the Komnenoi played a key role in the history of the Crusades in the Holy Land, while also exerting enormous cultural and political influence in Europe, the Near East, and the lands around the Mediterranean Sea. The Komnenian emperors, particularly John and Manuel, exerted great influence over the Crusader states of Outremer, whilst Alexios I played a key role in the course of the First Crusade, which he helped bring about. Moreover, it was during the Komnenian period that contact between Byzantium and the "Latin" Christian West, including the Crusader states, was at its most crucial stage. Venetian and other Italian traders became resident in Constantinople and the empire in large numbers (60–80,000 'Latins' in Constantinople alone), and their presence together with the numerous Latin mercenaries who were employed by Manuel in particular helped to spread Byzantine technology, art, literature and culture throughout the Roman Catholic west. Above all, the cultural impact of Byzantine art on the west at this period was enormous and of long lasting significance.

The Komnenoi also made a significant contribution to the history of Asia Minor. By reconquering much of the region, the Komnenoi set back the advance of the Turks in Anatolia by more than two centuries. In the process, they planted the foundations of the Byzantine successor states of Nicaea, Epirus and Trebizond. Meanwhile, their extensive programme of fortifications has left an enduring mark upon the Anatolian landscape, which can still be appreciated today.

Alexios I and the First Crusade

After Manzikert, a partial recovery (referred to as the Komnenian restoration) was made possible by the efforts of the Komnenian dynasty.^[72] The first emperor of this dynasty was Isaac I (1057–1059) and the second Alexios I. At the very outset of his reign, Alexios faced a formidable attack by the Normans under Robert Guiscard and his son Bohemund of Taranto, who captured Dyrrhachium and Corfu, and laid siege to Larissa in Thessaly. Robert Guiscard's death in 1085 temporarily eased the Norman problem. The following year, the Seljuq sultan died, and the sultanate was split by internal rivalries. By his own efforts, Alexios defeated the Pechenegs; they were caught by surprise and annihilated at the Battle of Levounion on 28 April 1091.^[29]

Having achieved stability in the West, Alexios could turn his attention to the severe economic difficulties and the disintegration of the Empire's traditional defences.^[73] However, he still did not have enough manpower to recover the lost territories in Asia Minor and to advance against the Seljuks. At the Council of Piacenza in 1095, Alexios' envoys spoke to Pope Urban II about the suffering of the Christians of the East, and underscored that without help from the West they would continue to suffer under Muslim rule. Urban saw Alexios' request as a dual opportunity to cement Western Europe and reunite the Eastern Orthodox churches with the Catholic Church under his rule.^[74] On 27 November 1095, Pope Urban II called together the Council of Clermont, and urged all those present to take up arms under the sign of the Cross and launch an armed pilgrimage to recover Jerusalem and the East from the Muslims. The response in Western Europe was overwhelming.^[29]

Alexios had anticipated help in the form of mercenary forces from the West, but was totally unprepared for the immense and undisciplined force which soon arrived in Byzantine territory. It was no comfort to Alexios to learn that four of the eight leaders of the main body of the Crusade were Normans, among them Bohemund. Since the crusade had to pass through Constantinople, however, the Emperor had some control over it. He required its leaders to swear to restore to the empire any towns or territories they might conquer from the Turks on their way to the Holy Land. In return, he gave them guides and a military escort.^[75] Alexios was able to recover a number of important cities and islands, and in fact much of western Asia Minor. Nevertheless, the crusaders believed their oaths were invalidated when Alexios did not help them during the siege of Antioch (he had in fact set out on the road to Antioch, but had been persuaded to turn back by Stephen of Blois, who assured him that all was lost and that the expedition had already failed).^[76] Bohemund, who had set himself up as Prince of Antioch, briefly went to war with the Byzantines, but agreed to become Alexios' vassal under the Treaty of Devol in 1108, which marked the end of Norman threat during Alexios' reign.^[77]

John II, Manuel I and the Second Crusade

Alexios's son John II Komnenos succeeded him in 1118, and was to rule until 1143. John was a pious and dedicated Emperor who was determined to undo the damage his empire had suffered at the Battle of Manzikert, half a century earlier.^[78] Famed for his piety and his remarkably mild and just reign, John was an exceptional example of a moral ruler, at a time when cruelty was the norm.^[79] For this reason, he has been called the Byzantine Marcus Aurelius.

In the course of his twenty-five year reign, John made alliances with the Holy Roman Empire in the West, decisively defeated the Pechenegs at the Battle of Beroia,^[80] and personally led numerous campaigns against the Turks in Asia Minor. John's campaigns fundamentally changed the balance of power in the East, forcing the Turks onto the defensive and restoring to the Byzantines many towns, fortresses and cities right across the peninsula.^[81] He also thwarted Hungarian, and Serbian threats during the 1120s, and in 1130 allied himself with the German emperor Lothair III against the Norman king Roger II of Sicily.^[82] In the later part of his reign, John focused his activities on the East. He defeated the Danishmend emirate of Melitene, and reconquered all of Cilicia, while forcing Raymond of Poitiers, Prince of Antioch, to recognise Byzantine suzerainty. In an effort to demonstrate the Emperor's role as the leader of the Christian world, John marched into the Holy Land at the head of the combined forces of the Empire and the Crusader states; yet despite the great vigour with which he pressed the campaign, John's hopes were disappointed by the treachery of his Crusader allies.^[83] In 1142, John returned to press his claims to Antioch, but he died in the spring of 1143 following a hunting accident. Raymond was emboldened to invade Cilicia, but he was defeated and forced to go to Constantinople to beg mercy from the new Emperor.^[84]

John's chosen heir was his fourth son, Manuel I Komnenos, who campaigned aggressively against his neighbours both in the west and in the east. In Palestine, he allied himself with the Crusader Kingdom of Jerusalem and sent a large fleet to participate in a combined invasion of Fatimid Egypt. Manuel reinforced his position as overlord of the Crusader states, with his hegemony over Antioch and Jerusalem secured by agreement with Raynald, Prince of Antioch, and Amalric, King of Jerusalem respectively.^[85] In an effort to restore Byzantine control over the ports of southern Italy, he sent an expedition to Italy in 1155, but disputes within the coalition led to the eventual failure of the campaign. Despite this military setback, Manuel's armies successfully invaded the Kingdom of Hungary in 1167, defeating the Hungarians at the Battle of Sirmium. By 1168, nearly the whole of the eastern Adriatic coast lay in Manuel's hands.^[86] Manuel made several alliances with the Pope and Western Christian kingdoms, and successfully handled the passage of the Second Crusade through his empire.^[87]

In the east, however, Manuel suffered a major defeat at the Battle of Myriokephalon, in 1176, against the Turks. Yet the losses were quickly made good, and in the following year Manuel's forces inflicted a defeat upon a force of "picked Turks".^[88] The Byzantine commander John Vatatzes, who destroyed the Turkish invaders at the Battle of Hyelion and Leimocheir, not only brought troops from the capital but also was able to gather an army along the way; a sign that the Byzantine army remained strong and that the defensive program of western Asia Minor was still successful.^[89]

Twelfth century Renaissance

John and Manuel pursued active military policies, and both deployed considerable resources on sieges and on city defences; aggressive fortification policies were at the heart of their imperial military policies.^[90] Despite the defeat at Myriokephalon, the policies of Alexios, John and Manuel resulted in vast territorial gains, increased frontier stability in Asia Minor, and secured the stabilisation of the Empire's European frontiers. From c.1081 to c.1180, the Komnenian army assured the empire's security, enabling Byzantine civilisation to flourish.^[91]

This allowed the Western provinces to achieve an economic revival which continued until the close of the century. It has been argued that Byzantium under the Komnenian rule was more prosperous than at any time since the Persian invasions of the 7th century. During the 12th century, population levels rose and extensive tracts of new agricultural land were brought into production. Archaeological evidence from both Europe and Asia Minor shows a considerable increase in the size of urban settlements, together with a notable upsurge in new towns. Trade was also flourishing; the Venetians, the Genoese and others opened up the ports of the Aegean to commerce, shipping goods from the Crusader kingdoms of Outremer and Fatimid Egypt to the west and trading with the Empire via Constantinople.^[92]

In artistic terms, there was a revival in mosaic, and regional schools of architecture began producing many distinctive styles that drew on a range of cultural influences.^[93] During the 12th century, the Byzantines provided their model of early humanism as a renaissance of interest in classical authors. In Eustathius of Thessalonica, Byzantine humanism found its most characteristic expression.^[94]

Decline and disintegration

Dynasty of the Angeloi

Manuel's death on 24 September 1180 left his 11-year-old son Alexios II Komnenos on the throne. Alexios was highly incompetent at the office, but it was his mother, Maria of Antioch, and her Frankish background that made his regency unpopular.^[95] Eventually, Andronikos I Komnenos, a grandson of Alexios I, launched a revolt against his younger relative and managed to overthrow him in a violent coup d'état. Utilizing his good looks and his immense popularity with the army, he marched on to Constantinople in August 1182, and incited a massacre of the Latins.^[96] After eliminating his potential rivals, he had himself crowned as co-emperor in September 1183; he eliminated Alexios II and even took his 12-year-old wife Agnes of France for himself.^[96]

Andronikos began his reign well; in particular, the measures he took to reform the government of the Empire have been praised by historians. According to George Ostrogorsky, Andronikos was determined to root out corruption: Under his rule, the sale of offices ceased; selection was based on merit, rather than favouritism; officials were paid an adequate salary so as to reduce the temptation of bribery. In the provinces, Andronikos's reforms produced a speedy and marked improvement.^[97] The aristocrats were infuriated against him, and to make matters worse, Andronikos seems to have become increasingly unbalanced; executions and violence became increasingly common, and his reign turned into a reign of terror.^[98] Andronikos seemed almost to seek the extermination of the aristocracy as a whole. The struggle against the aristocracy turned into wholesale slaughter, while the Emperor resorted to ever more ruthless measures to shore up his regime.^[97]

Despite his military background, Andronikos failed to deal with Isaac Komnenos, Béla III who reincorporated Croatian territories into Hungary, and Stephen Nemanja of Serbia who declared his independence from the Empire. Yet, none of these troubles would compare to William II of Sicily's invasion force of 300 ships and 80,000 men, arriving in 1185.^[99] Andronikos mobilised a small fleet of 100 ships to defend the capital but other than that he was indifferent to the populace. He was finally overthrown when Isaac Angelos, surviving an imperial assassination attempt, seized power with the aid of the people and had Andronikos killed.^[100]

The reign of Isaac II, and, still more, that of his brother Alexios III, saw the collapse of what remained of the centralised machinery of Byzantine government and defence. Although, the Normans were driven out of Greece, in 1186 the Vlachs and Bulgars began a rebellion that was to lead to the formation of the Second Bulgarian Empire. The internal policy of the Angeloi was characterised by the squandering of the public treasure, and fiscal maladministration. Imperial authority was severely weakened, and the growing power vacuum at the center of the Empire encouraged fragmentation. There is evidence that some Komnenian heirs had set up a semi-independent state in Trebizond before 1204.^[101] According to Alexander Vasiliev, "the dynasty of the Angeloi, Greek in its origin, [...] accelerated the ruin of the Empire, already weakened without and disunited within."^[102]

Fourth Crusade

In 1198, Pope Innocent III broached the subject of a new crusade through legates and encyclical letters.^[103] The stated intent of the crusade was to conquer Egypt, now the centre of Muslim power in the Levant. The crusader army that arrived at Venice in the summer of 1202 was somewhat smaller than had been anticipated, and there were not sufficient funds to pay the Venetians, whose fleet was hired by the crusaders to take them to Egypt. Venetian policy under the ageing and blind but still ambitious Doge Enrico Dandolo was potentially at variance with that of the Pope and the crusaders, because Venice was closely related commercially with Egypt.^[104] The crusaders accepted the suggestion that in lieu of payment they assist the Venetians in the capture of the (Christian) port of Zara in Dalmatia (vassal city of Venice, which had rebelled and placed itself under Hungary's protection in 1186).^[105] The city fell in November 1202 after a brief siege.^[106] Innocent, who was informed of the plan but his veto disregarded, was reluctant to jeopardise the Crusade, and gave conditional absolution to the crusaders—not, however, to the Venetians.^[104]

After the death of Theobald III, Count of Champagne, the leadership of the Crusade passed to Boniface of Montferrat, a friend of the Hohenstaufen Philip of Swabia. Both Boniface and Philip had married into the Byzantine Imperial family. In fact, Philip's brother-in-law, Alexios Angelos, son of the deposed and blinded Emperor Isaac II Angelos, had appeared in Europe seeking aid and had made contacts with the crusaders. Alexios offered to reunite the Byzantine church with Rome, pay the crusaders 200,000 silver marks, join the crusade and provide all the supplies they needed to get to Egypt.^[107] Innocent was aware of a plan to divert the Crusade to Constantinople and forbade any attack on the city, but the papal letter arrived after the fleets had left Zara.

The crusaders arrived at the city in the summer of 1203 and quickly attacked, started a major fire which damaged large parts of the city, and seized control of it (first of two times). Alexios III fled from the capital, and Alexios Angelos was elevated to the throne as Alexios IV along with his blind father Isaac. However, Alexios IV and Isaac II were unable to keep their promises and were deposed by Alexios V. Eventually, the crusaders took the city a second time on 13 April 1204 and Constantinople was subjected to pillage and massacre by the rank and file for three days. Many priceless icons, relics, and other objects later turned up in Western Europe, a large number in Venice. According to Choniates, a prostitute was even set up on the Patriarchal throne.^[108] When Innocent III heard of the conduct of his crusaders, he castigated them in no uncertain terms. But the situation was beyond his control, especially after his legate, on his own initiative, had absolved the crusaders from their vow to proceed to the Holy Land.^[64][104] When order had been restored, the crusaders and the Venetians proceeded to implement their agreement; Baldwin of Flanders was elected Emperor and the Venetian Thomas Morosini chosen as Patriarch. The lands divided up among the leaders included most of the former Byzantine possessions, however resistance would continue through the Byzantine remnants of the Nicaea, Trebizond, and Epirus.^[104]

Fall

Empire in exile

After the sack of Constantinople in 1204 by Latin Crusaders, two Byzantine successor states were established: the Empire of Nicaea, and the Despotate of Epirus. A third one, the Empire of Trebizond was created a few weeks before the sack of Constantinople by Alexios I of Trebizond. Of these three successor states, Epirus and Nicaea stood the best chance of reclaiming Constantinople. The Nicaean Empire struggled, however, to survive the next few decades, and by the mid-13th century it lost much of southern Anatolia.^[109] The weakening of the Sultanate of Rûm following the Mongol Invasion in 1242–43 allowed many Beyliks and ghazis to set up their own principalities in Anatolia, weakening the Byzantine hold on Asia Minor.^[110] In time, one of the Beys, Osman I, created an empire that would eventually conquer Constantinople. However, the Mongol Invasion also gave Nicaea a temporary respite from Seljuk attacks allowing it to concentrate on the Latin Empire only north of its position.

Reconquest of Constantinople

The Empire of Nicaea, founded by the Laskarid dynasty, managed to reclaim Constantinople from the Latins in 1261 and defeat Epirus. This led to a short-lived revival of Byzantine fortunes under Michael VIII Palaiologos, but the war-ravaged Empire was ill-equipped to deal with the enemies that now surrounded it. In order to maintain his campaigns against the Latins, Michael pulled troops from Asia Minor, and levied crippling taxes on the peasantry, causing much resentment.^[111] Massive construction projects were completed in Constantinople to repair the damages of the Fourth Crusade, but none of these initiatives was of any comfort to the farmers in Asia Minor, suffering raids from fanatical ghazis.

Rather than holding on to his possessions in Asia Minor, Michael chose to expand the Empire, gaining only short-term success. To avoid another sacking of the capital by the Latins, he forced the Church to submit to Rome, again a temporary solution for which the peasantry hated Michael and Constantinople.^[112] The efforts of Andronikos II and later his grandson Andronikos III marked Byzantium's last genuine attempts in restoring the glory of the Empire. However, the use of mercenaries by Andronikos II would often backfire, with the Catalan Company ravaging the countryside and increasing resentment towards Constantinople.^[113]

Rise of the Ottomans and fall of Constantinople

Things went worse for Byzantium during the civil wars that followed after Andronikos III died. A six-year long civil war devastated the empire, allowing the Serbian ruler Stefan IV Dushan to overrun most of the Empire's remaining territory and establish a short-lived "Serbian Empire". In 1354, an earthquake at Gallipoli devastated the fort, allowing the Ottomans (who were hired as mercenaries during the civil war by John VI Kantakouzenos) to establish themselves in Europe.^[114] By the time the Byzantine civil wars had ended, the Ottomans had defeated the Serbians and subjugated them as vassals. Following the Battle of Kosovo, much of the Balkans became dominated by the Ottomans.^[115]

The Byzantine emperors appealed to the West for help, but the Pope would only consider sending aid in return for a reunion of the Eastern Orthodox Church with the See of Rome. Church unity was considered, and occasionally accomplished by imperial decree, but the Orthodox citizenry and clergy intensely resented the authority of Rome and the Latin Rite.^[116] Some Western troops arrived to bolster the Christian defence of Constantinople, but most Western rulers, distracted by their own affairs, did nothing as the Ottomans picked apart the remaining Byzantine territories.^[117]

Constantinople by this stage was underpopulated and dilapidated. The population of the city had collapsed so severely that it was now little more than a cluster of villages separated by fields. On 2 April 1453, Sultan Mehmed's army of some 80,000 men and large numbers of irregulars laid siege to the city.^[118] Despite a desperate last-ditch defence of the city by the massively outnumbered Christian forces (c. 7,000 men, 2,000 of whom were foreign),^[117] Constantinople finally fell to the Ottomans after a two-month siege on 29 May 1453. The last Byzantine Emperor, Constantine XI Palaiologos, was last seen casting off his imperial regalia and throwing himself into hand-to-hand combat after the walls of the city were taken.^[119]

Aftermath

By the time of the fall of Constantinople, the only remaining territory of the Byzantine Empire was the Despotate of the Morea, which was ruled by brothers of the last Emperor and continued on as a vassal state to the Ottomans. Incompetent rule, failure to pay the annual tribute and a revolt against the Ottomans finally led to Mehmed II's invasion of Morea in May 1460; he conquered the entire Despotate by the summer. The Empire of Trebizond, which had split away from the Byzantine Empire in 1204, became the last remnant and last de facto successor state to the Byzantine Empire. Efforts by the Emperor David to recruit European powers for an anti-Ottoman crusade provoked war between the Ottomans and Trebizond in the summer of 1461. After a month long siege, David surrendered the city of Trebizond on August 14, 1461. With the fall of Trebizond, the last remnant of the Roman Empire was extinguished.

The nephew of the last Emperor, Constantine XI, Andreas Palaeologos had inherited the title of Byzantine Emperor. He lived in the Morea (Peloponnese) until its fall in 1460, then escaped to Rome where he lived under the protection of the Papal States for the remainder of his life. He styled himself Imperator Constantinopolitanus ("Emperor of Constantinople"), and sold his succession rights to both Charles VIII of France and the Catholic Monarchs. However, no one ever invoked the title after Andreas's death, thus he is considered to be the last titular Byzantine Emperor. Mehmed II and his successors continued to consider themselves heirs to the Roman Empire until the demise of the Ottoman Empire in the early 20th century. Meanwhile, the Danubian Principalities (whose rulers also considered themselves the heirs of the Eastern Roman Emperors^[120]) harboured Orthodox refugees, including some Byzantine nobles.

At his death, the role of the emperor as a patron of Eastern Orthodoxy was claimed by Ivan III, Grand Duke of Muscovy. He had married Andreas' sister, Sophia Paleologue, whose grandson, Ivan IV, would become the first Tsar of Russia (tsar, or czar, meaning caesar, is a term traditionally applied by Slavs to the Byzantine Emperors). Their successors supported the idea that Moscow was the proper heir to Rome and Constantinople. The idea of the Russian Empire as the new, Third Rome was kept alive until its demise with the Russian Revolution of 1917.^[121]

Culture

Economy

Byzantine Culture
Art • Architecture • Gardens
Literature • Music
Aristocracy & Bureaucracy • Diplomacy
Economy • Law
Army • Navy
Calendar • Coinage • Cuisine
Dance • Dress
Medicine • Science

The Byzantine economy was among the most advanced in Europe and the Mediterranean for many centuries. Europe, in particular, was unable to match Byzantine economic strength until late in the Middle Ages. Constantinople was a prime hub in a trading network that at various times extended across nearly all of Eurasia and North Africa, in particular being the primary western terminus of the famous silk road. Some scholars argue that, up until the arrival of the Arabs in the 7th century, the Empire had the most powerful economy in the world. The Arab conquests, however, would represent a substantial reversal of fortunes contributing to a period of decline and stagnation. Constantine V's reforms (c. 765) marked the beginning of a revival that continued until 1204. From the 10th century until the end of the twelfth, the Byzantine Empire projected an image of luxury, and the travellers were impressed by the wealth accumulated in the capital. All this changed with the arrival of the Fourth Crusade, which was an economic catastrophe.^[122] The Palaiologoi tried to revive the economy, but the late Byzantine state would not gain full control of either the foreign or domestic economic forces. Gradually, it also lost its influence on the modalities of trade and the price mechanisms, and its control over the outflow of precious metals and, according to some scholars, even over the minting of coins.^[123]

One of the economic foundations of the Empire was trade. Textiles must have been by far the most important item of export; silks were certainly imported into Egypt, and appeared also in Bulgaria, and the West.^[124] The state strictly controlled both the internal and the international trade, and retained the monopoly of issuing coinage. The government exercised formal control over interest rates, and set the parameters for the activity of the guilds and corporations, in which it had a special interest. The Emperor and his officials intervened at times of crisis to ensure the provisioning of the capital, and to keep down the price of cereals. Finally, the government often collected part of the surplus through taxation, and put it back into circulation, through redistribution in the form of salaries to state officials, or in the form of investment in public works.^[125]

Science, medicine, law

The writings of Classical antiquity never ceased to be cultivated in Byzantium. Therefore, Byzantine science was in every period closely connected with ancient philosophy, and metaphysics.^[126] Although at various times the Byzantines made magnificent achievements in the application of the sciences (notably in the construction of the Hagia Sophia), after the 6th century Byzantine scholars made few novel contributions to science in terms of developing new theories or extending the ideas of classical authors.^[127] Scholarship particularly lagged during the dark years of plague and the Arab conquests, but then during the so-called Byzantine Renaissance at the end of the first millennium Byzantine scholars re-asserted themselves becoming experts in the scientific developments of the Arabs and Persians, particularly in astronomy and mathematics.^[128]

In the final century of the Empire, Byzantine grammarians were those principally responsible for carrying, in person and in writing, ancient Greek grammatical and literary studies to early Renaissance Italy.^[129] During this period, astronomy and other mathematical sciences were taught in Trebizond; medicine attracted the interest of almost all scholars.^[130]

In the field of law, Justinian I's reforms had a clear effect on the evolution of jurisprudence, and Leo III's Ecloga influenced the formation of legal institutions in the Slavic world.^[131]

Religion

The survival of the Empire in the East assured an active role of the Emperor in the affairs of the Church. The Byzantine state inherited from pagan times the administrative, and financial routine of administering religious affairs, and this routine was applied to the Christian Church. Following the pattern set by Eusebius of Caesarea, the Byzantines viewed the Emperor as a representative or messenger of Christ, responsible particularly for the propagation of Christianity among pagans, and for the "externals" of the religion, such as administration and finances. The imperial role, however, in the affairs of the Church never developed into a fixed, legally defined system.^[132]

Christianity was never fully united and the Christians in the Byzantine Empire were diverse throughout the Empire's history. The state church of the Roman Empire, which came to be known as the Eastern Orthodox Church, never represented all Christians in the Empire. Nestorianism, a view promoted by Nestorius who was a 5th century Patriarch of Constantinople, split from the imperial church leading to what is today the Assyrian Church of the East. In a greater schism during the 6th century the Myaphysite churches split from the imperial church over the declarations of the Council of Chalcedon. Aside from these communions, Arianism and other Christian sects existed in the early Empire, although by the time of Rome's fall in the 5th century Arianism was mostly confined to the Germanic peoples of Western Europe. By the Empire's late stages, though, Eastern Orthodoxy represented most Christians in what remained of the Empire. Jews were a significant minority in the Empire throughout its history. Despite periods of persecution, they were generally tolerated, if not always embraced, during most periods.

With the decline of Rome, and internal dissension in the other Eastern Patriarchates, the Church of Constantinople became, between the sixth and 11th centuries, the richest and most influential center of Christendom.^[133] Even when the Empire was reduced to only a shadow of its former self, the Church, as an institution, had never exercised so much influence both inside and outside of the imperial frontiers. As George Ostrogorsky points out:

The Patriarchate of Constantinople remained the center of the Orthodox world, with subordinate metropolitan sees and archbishoprics in the territory of Asia Minor and the Balkans, now lost to Byzantium, as well as in Caucasus, Russia and Lithuania. The Church remained the most stable element in the Byzantine Empire.^[134]

Art and literature

Byzantine art is almost entirely concerned with religious expression and, more specifically, with the impersonal translation of carefully controlled church theology into artistic terms. Byzantine forms were spread by trade and conquest to Italy and Sicily, where they persisted in modified form through the 12th century, and became formative influences on Italian Renaissance art. By means of the expansion of the Eastern Orthodox church, Byzantine forms spread to eastern European centres, particularly Russia.^[135] Influences from Byzantine architecture, particularly in religious buildings, can be found in diverse regions from Egypt and Arabia to Russia and Romania.

In Byzantine literature, therefore, four different cultural elements are to be reckoned with: the Greek, the Christian, the Roman, and the Oriental. Byzantine literature is often classified in five groups: historians and annalists, encyclopedists (Patriarch Photios, Michael Psellos, and Michael Choniates are regarded as the greatest encyclopedists of Byzantium) and essayists, and writers of secular poetry (The only genuine heroic epic of the Byzantines is the Digenis Acritas). The remaining two groups include the new literary species: ecclesiastical and theological literature, and popular poetry. Of the approximately two to three thousand volumes of Byzantine literature that survive, only three hundred and thirty consist of secular poetry, history, science and pseudo-science.^[136] While the most flourishing period of the secular literature of Byzantium runs from the ninth to the 12th century, its religious literature (sermons, liturgical books and poetry, theology, devotional treatises etc.) developed much earlier with Romanos the Melodist being its most prominent representative.^[137]

Government and bureaucracy

In the Byzantine state, the emperor became the sole and absolute ruler, and his power was regarded as having divine origin.^[19] The Senate ceased to have real political and legislative authority but remained as an honorary council with titular members. By the end of the 8th century, a civil administration focused on the court was formed as part of a large-scale consolidation of power in the capital (the rise to pre-eminence of the position of sakellarios is related to this change).^[138] The most important reform of this period is the creation of themes, where civil and military administration is exercised by one person, the strategos.^[19]

Despite the occasionally derogatory use of the word "Byzantine", the Byzantine bureaucracy had a distinct ability for reinventing itself in accordance with the Empire's situation. The Byzantine system of titulature and precedence makes the imperial administration look like an ordered bureaucracy to modern observers. Officials were arranged in strict order around the emperor, and depended upon the imperial will for their ranks. There were also actual administrative jobs, but authority could be vested in individuals rather than offices.^[139] In the 8th and 9th centuries, civil service constituted the clearest path to aristocratic status, but, starting in the 9th century, the civil aristocracy was rivalled by an aristocracy of nobility. According to some studies of Byzantine government, 11th century politics were dominated by competition between the civil and the military aristocracy. During this period, Alexios I undertook important administrative reforms, including the creation of new courtly dignities and offices.^[140]

Diplomacy

After the fall of Rome, the key challenge to the Empire was to maintain a set of relations between itself and its neighbours. When these nations set about forging formal political institutions, they often modelled themselves on Constantinople. Byzantine diplomacy soon managed to draw its neighbours into a network of international and inter-state relations.^[141] This network revolved around treaty making, and included the welcoming of the new ruler into the family of kings, and the assimilation of Byzantine social attitudes, values and institutions.^[142] Whereas classical writers are fond of making ethical and legal distinctions between peace and war, Byzantines regarded diplomacy as a form of war by other means.^[143] For example, a Bulgarian threat could be countered by providing money to the Kievian Rus.^[143] The Orthodox Church also maintained a diplomatic function, and the spread of Orthodox Christianity was a key diplomatic goal of the Empire.

Diplomacy in the era was understood to have an intelligence-gathering function on top of its pure political function. The Bureau of Barbarians in Constantinople handled matters of protocol and record keeping for any matters dealing with "Barbarians", and thus had, perhaps, a basic intelligence function itself.^[144] J. B. Bury believed that the office exercised supervision over all foreigners visiting Constantinople, and that they were under the supervision of the Logothete of the Course.^[145] While on the surface a protocol office—its main duty was to ensure foreign envoys were properly cared for and received sufficient state funds for their maintenance, and it kept all the official translators—it clearly had a security function as well. On Strategy, from the 6th century, offers advice about foreign embassies: "[Envoys] who are sent to us should be received honourably and generously, for everyone holds envoys in high esteem. Their attendants, however, should be kept under surveillance to keep them from obtaining any information by asking questions of our people."^[146]

Byzantines availed themselves of a number of diplomatic practices. For example, embassies to the capital would often stay on for years. A member of other royal houses would routinely be requested to stay on in Constantinople, not only as a potential hostage, but also as a useful pawn in case political conditions where he came from changed. Another key practice was to overwhelm visitors by sumptuous displays.^[141] According to Dimitri Obolensky, the preservation of civilisation in Eastern Europe was due to the skill and resourcefulness of Byzantine diplomacy, which remains one of Byzantium's lasting contributions to the history of Europe.^[147]

Language

The original language of the government of the Empire, which owed its origins to Rome, had been Latin and this continued to be its official language until the 7th century when it was effectively changed to Greek by Heraclius. Scholarly Latin would rapidly fall into disuse among the educated classes although the language would continue to be at least a ceremonial part of the Empire's culture for some time.^[148] Additionally, Vulgar Latin continued to be a minority language in the Empire, and among the Thraco-Roman populations it gave birth to the (Proto-)Romanian language.^[149] Likewise, on the coast of the Adriatic Sea, another neo-Latin vernacular developed, which would later give rise to the Dalmatian language. In the Western Mediterranean provinces temporarily acquired under the reign of Emperor Justinian I, Latin (eventually evolving into Italian) continued to be used both as a spoken language and the language of scholarship.

Apart from the Imperial court, administration and military, the primary language used in the eastern Roman provinces even before the decline of the Western Empire had always been Greek, having been spoken in the region for centuries before Latin.^[150] Indeed early on in the life of the Roman Empire, Greek had become the common language in the Christian Church, the language of scholarship and the arts, and, to a large degree, the lingua franca for trade between provinces and with other nations.^[151] The language itself for a time gained a dual nature with the primary spoken language, Koine, existing alongside an older literary language with Koine eventually evolving into the standard dialect.^[152]

Many other languages existed in the multi-ethnic Empire as well, and some of these were given limited official status in their provinces at various times. Notably, by the beginning of the Middle Ages, Syriac and Aramaic had become more widely used by the educated classes in the far eastern provinces.^[153] Similarly Coptic, Armenian, and Georgian became significant among the educated in their provinces,^[154] and later foreign contacts made the Slavonic, Vlach, and Arabic languages important in the Empire and its sphere of influence.^[155]

Aside from these, since Constantinople was a prime trading center in the Mediterranean region and beyond, virtually every known language of the Middle Ages was spoken in the Empire at some time, even Chinese.^[156] As the Empire entered its final decline, the Empire's citizens became more culturally homogeneous and the Greek language became integral to their identity and their religion.^[157]

Legacy

As the only stable long-term state in Europe during the Middle Ages, Byzantium isolated Western Europe from newly emerging forces to the East. Constantly under attack, it distanced Western Europe from Persians, Arabs, Seljuk Turks, and for a time, the Ottomans. The Byzantine-Arab Wars, for example, are recognised by some historians as being a key factor behind the rise of Charlemagne,^[158] and a stimulus to feudalism and economic self-sufficiency.

Following the conquest of Constantinople by the Ottoman Turks in 1453, Sultan Mehmed II took the title "Kaysar-i-Rûm" (the Turkish equivalent of Caesar of Rome)^[159] since he was determined to make the Ottoman Empire the heir of the Eastern Roman Empire.^[160]

Since the early 20th century, the terms Byzantine and Byzantinism have been used as bywords for decadence, duplicitous politics and complex bureaucracy. There was also a strongly negative assessment of Byzantine civilisation and its legacy in Southeastern Europe.^[161] Byzantinism in general was defined as a body of religious, political, and philosophical ideas which ran contrary to those of the West.^[162]

See also

Wikisource has original works on the topic: Byzantine Empire

• Byzantine architecture
• Byzantine aristocracy and bureaucracy
• Byzantine army
• Byzantine art
• Byzantine calendar
• Byzantine dance
• Byzantine diplomacy
• Byzantine dress
• Byzantine coinage
• Byzantine cuisine
• Byzantine gardens
• Byzantine Greeks
• Byzantine law
• Byzantine literature
• Byzantine medicine
• Byzantine music
• Byzantine navy
• Byzantine science
• History of Greece
• Index of Byzantine Empire-related articles
• Legacy of the Roman Empire
• List of Byzantine emperors
• List of Byzantine inventions
• List of Byzantine revolts and civil wars
• List of Byzantine wars

Annotations

Notes

References

Primary sources

Secondary sources

Further reading

External links

Byzantine studies, resources and bibliography

• Adena, L. "The Enduring Legacy of Byzantium", Clio History Journal, 2008.
• Ciesniewski, C. "The Byzantine Achievement", Clio History Journal, 2006.
• Fox, Clinton R. What, If Anything, Is a Byzantine? (Online Encyclopedia of Roman Emperors)
• The Cambridge Medieval History (IV) The Eastern Roman Empire (717–1453).
• Byzantine studies homepage at Dumbarton Oaks. Includes links to numerous electronic texts.
• Byzantium: Byzantine studies on the Internet. Links to various online resources.
• Translations from Byzantine Sources: The Imperial Centuries, c. 700–1204. Online sourcebook.
• De Re Militari. Resources for medieval history, including numerous translated sources on the Byzantine wars.
• Medieval Sourcebook: Byzantium. Numerous primary sources on Byzantine history.
• Bibliography on Byzantine Material Culture and Daily Life. Hosted by the University of Vienna; in English.
• Constantinople Home Page. Links to texts, images and videos on Byzantium.
• Byzantium in Crimea: Political History, Art and Culture.
• Institute for Byzantine Studies of the Austrian Academy of Sciences (with further resources and a repository with papers on various aspects of the Byzantine Empire)

Miscellaneous

• Byzantine Empire on In Our Time at the BBC. (listen now)
• De Imperatoribus Romanis. Scholarly biographies of many Byzantine emperors.
• The Fall of the Empire. Byzantine Lesson (2007). (Russian: Гибель империи. Византийский урок) A film explaining the political and economical reasons for the fall of the Empire, filmed by the Russian Orthodox Church.
• 12 Byzantine Rulers by Lars Brownworth of The Stony Brook School; audio lectures. NYTimes review.
• 18 centuries of Roman Empire by Howard Wiseman (Maps of the Roman/Byzantine Empire throughout its lifetime).

Topics on the Byzantine Empire History Roman Empire → Dominate → Early Byzantine period (Constantinian dynasty → Valentinian dynasty → Theodosian dynasty → Leonid dynasty → Justinian dynasty → Heraclian dynasty) → Middle Byzantine period (Isaurian dynasty → Amorian dynasty → Macedonian dynasty → Doukid dynasty → Komnenian dynasty → Angelid dynasty) → Late Byzantine period (Fourth Crusade → Latin Empire, Empire of Nicaea, Epirus, Trebizond, and other successor states) → Palaiologan dynasty → Fall to the Ottoman Empire) Government and Administration Central government: Emperors (Basileus) · Senate · Imperial Bureaucracy · Eparch · Early period (Praetorian prefects · Magister officiorum · Comes sacrarum largitionum · Quaestor sacri palatii) · Middle period (Logothetes · Sakellarios) · Late Byzantine period (Megas logothetes · Mesazon) Provincial administration: Early period (Praetorian prefectures · Dioceses · Provinces · Exarchate of Ravenna · Exarchate of Africa) · Middle period (Themes · Kleisourai · Catepanates) · Late period (Kephale · Despotates) Diplomacy: Treaties · Diplomats Law Codex Theodosianus · Corpus Juris Civilis · Ecloga · Basilika · Hexabiblos · Mutilation Military Byzantine army (Late Roman army → East Roman army → Middle Byzantine army → Komnenian army → Palaiologan army): Battle tactics · Military manuals · Wars and Battles · Revolts · Siege warfare · Generals · Foederati · Bucellarii · Tagmata · Domestic of the Schools · Mercenaries · Varangian Guard · Akritai · Pronoia Byzantine navy: Karabisianoi · Maritime themes (Cibyrrhaeots · Aegean Sea · Samos)  · Dromon · Greek fire · Megas doux · Admirals · Naval battles Religion and Church Eastern Orthodox Church · Ecumenical councils · Patriarchate of Constantinople · Arianism · Monophysitism · Paulicianism · Iconoclasm · Great Schism · Bogomilism · Hesychasm · Mount Athos · Jews · Muslims Society and Culture Architecture: Secular · Sacred (Cross-in-square) · Constantinople (Great Palace of Constantinople · Blachernae Palace · Hagia Sophia · Hagia Irene · Chora Church · Pammakaristos Church · City Walls) · Thessalonica (Arch of Galerius and Rotunda · Hagios Demetrios · Hagia Sophia · Panagia Chalkeon) · Ravenna (San Vitale · Sant'Apollinare in Classe · Sant'Apollinare Nuovo) · Daphni Monastery · Hosios Loukas · Nea Moni of Chios · Saint Catherine's Monastery, Mount Sinai · Mystras · Revival Art: Icons · Mosaics · Painters · Macedonian period art · Komnenian renaissance Economy: Agriculture · Coinage and Mints · Trade (Silk · Silk Road · Trade with the Varangians) Literature: Novel · Acritic songs (Digenes Akritas) · Alexander romance · Historians People and everyday life: People · Byzantine Greeks · Heraldry · Hippodrome · Calendar · Cuisine · Dance · Dress · Music Science and learning: Inventions · Medicine · Neoplatonism · Philosophy · Encyclopaedism · Scholars in the Renaissance · Scholars · University Legacy/Other topics Byzantine studies · Byzantinism · Third Rome Byzantine Empire Portal

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Komnenos topics Emperors Isaac I Komnenos * Alexius I * John II Komnenos * Manuel I Komnenos * Andronikos I Komnenos Komnenos topics Komnenian dynasty * Byzantium under the Komnenos dynasty * Byzantium under the Komnenoi * Komnenian army