Centuries: 6th century BC - 5th century BC - 4th century BC
Decades: 470s BC 460s BC 450s BC 440s BC 430s BC - 420s BC - 410s BC 400s BC 390s BC 380s BC 370s BC
Years: 427 BC 426 BC 425 BC 424 BC 423 BC - 422 BC - 421 BC 420 BC 419 BC 418 BC 417 BC
Events
- Battle of Amphipolis: The Spartans under Brasidas defeat the Athenians under Cleon.
