Centuries: 5th century BC - 4th century BC - 3rd century BC

Decades: 450s BC 440s BC 430s BC 420s BC 410s BC - 400s BC - 390s BC 380s BC 370s BC 360s BC 350s BC

Years: 405 BC 404 BC 403 BC 402 BC 401 BC - 400 BC - 399 BC 398 BC 397 BC 396 BC 395 BC

Events

• The Celtics claim Vienna, Austria
• Carthaginians occupy Malta.
• The catapult is invented by Greek engineers.

Births

• Kidinnu, Chaldean astronomer (approximate year)

Deaths

• Thucydides

400 aC | 400 f.Kr. | 400 v. Chr. | 400 adC | -400 | K. a. 400 | -400 | 기원전 400년 | 400 p.n.e. | 400 aK | 400 a.C. | -400 | 400 SM | 400 v. Chr. | 400 AC | 400 f.Kr. | -400 | 400 p.n.e. | 400 a.C. | 400 до н. э. | 400 pred Kr. | 400 pr. n. št. | 400. пне. | 400 eaa | 400 f.Kr. | พ.ศ. 144 | 400 до Р.Х. | 前400年