378 BC

Centuries:	5th century BC - 4th century BC - 3rd century BC
Decades:	400s BC 390s BC 380s BC - 370s BC - 360s BC 350s BC 340s BC
Years:	381 BC 380 BC 379 BC - 378 BC - 377 BC 376 BC 375 BC

378 BC by topic
Politics
State leaders - Sovereign states
Birth and death categories
Births - Deaths
Establishments and disestablishments categories
Establishments - Disestablishments v • d • e

**378 BC in other calendars**
Gregorian calendar	378 BC
Ab urbe condita	376
Armenian calendar	N/A
Bahá'í calendar	-2221 – -2220
Buddhist calendar	167
Chinese calendar	2259/2319 ([[Sexagenary cycle\|]]年) — to — 2260/2320 ([[Sexagenary cycle\|]]年)
Ethiopian calendar	-385 – -384
Hebrew calendar	3383 – 3384
Hindu calendars
- Vikram Samvat	-322 – -321
- Shaka Samvat	N/A
- Kali Yuga	2724 – 2725
Holocene calendar	9623
Iranian calendar	999 BP – 998 BP
Islamic calendar	1030 BH – 1029 BH
Japanese calendar
- Imperial Year	Kōki 283 (皇紀283年)
- Jōmon Era	9623
Julian calendar	-332
Korean calendar	1956
Thai solar calendar	166
v • d • e

[edit] Events

The Theban general and statesman, Epaminondas, takes command of Thebes. Pelopidas is elected boeotarch, or chief magistrate, of the city.
Timotheus, the son of the Athenian general Conon, is elected strategos of Athens.
A Spartan attempt to seize Piraeus brings Athens closer to Thebes. The Athenian mercenary, Chabrias, defeats the Spartans in the battle. In fighting the battle, Chabrias invents a new defensive technique; he orders each soldier to receive a charge kneeling on his left knee, with his shield resting on the ground and spear pointed at the enemy.
Athens allies itself with Thebes and forms the Second Athenian Empire. The confederacy includes most of the Boeotian cities and some of the Ionian islands.

Dionysius I's third war with Carthage proves disastrous. He suffers a crushing defeat at Cronium and is forced to pay an indemnity of 1,000 talents and cede the territory west of the Halycus River to the Carthaginians.