4th century

Eastern Hemisphere at the beginning of the 4th century AD.

Eastern Hemisphere at the end of the 4th century AD.

As a means of recording the passage of time, the 4th century (per the Julian calendar and Anno Domini/Common era) was that century which lasted from 301 to 400.

Overview

In the West, the early part of the century was shaped by Constantine I, who became the first Roman emperor to convert to Christianity. Gaining sole reign of the empire, he is also noted for re-establishing a single imperial capital, choosing the site of ancient Byzantium in 330 (over of the current capitals, which had effectively been changed by Diocletian's reforms to Milan in the West, and Nicomedia in the East) to build the city soon called Nova Roma (New Rome); it was later renamed Constantinople in his honor.

The last emperor to control both the eastern and western halves of the empire was Theodosius I. As the century progressed after his death it became increasingly apparent that the empire had changed in many ways since the time of Augustus. The two emperor system originally established by Diocletian in the previous century fell into regular practice, and the east continued to grow in importance as a centre of trade and imperial power, while Rome itself diminished greatly in importance due to its location far from potential trouble spots, like Central Europe and the East. Late in the century Christianity became the official state religion, and the empire's old pagan culture began to disappear. General prosperity was felt throughout this period, but recurring invasions by Germanic tribes plagued the empire from AD 376 onward. These early invasions marked the beginning of the end for the Western Roman Empire.

According to archaeologists, sufficient archaeological correlates of state-level societies coalesced in the 4th century to show the existence of the Three Kingdoms (AD 300/400-668) of Baekje, Goguryeo, and Silla.

Events

Contemporary bronze head of Constantine I.

• 301: Armenia first to adopt Christianity as state religion, followed by Ethiopia, circa 320, San Marino is founded as a republic
• 306–337: Constantine I, ends persecution of Christians in the Roman Empire, calls First Council of Nicaea, see also Constantinian shift, Constantinople becomes new seat of government (New Rome)
• 350: About this time the Huns begin to invade the Sassanid Empire. ^[1]
• 376: Visigoths appear on the Danube and are allowed entry into the Roman Empire in their flight from the Huns.
• 378: Battle of Adrianople. Roman army is defeated by Visigoth cavalry. Emperor Valens is killed.
• 378–395: Theodosius I, Roman emperor, bans pagan worship, Christianity is made the official religion of the Empire.
• 383: Battle of Fei River in China

Inventions, discoveries, introductions

• The stirrup was invented in China, no later than 322^[2][3]
• Kama Sutra
• Codex Sinaiticus, Codex Vaticanus, earliest Christian bibles
• Book of Steps, Syriac religious discourses

References

1. ↑ Roberts, J: "History of the World". Penguin, 1994.
2. ↑ The stirrup and its effect on chinese military history
3. ↑ The invention and influences of stirrup

Greek Fire

External links

• Fourth-Century Christianity Website

Decades and years