Year 421 BC was a year of the pre-Julian Roman calendar. At the time, it was known in Rome as the Year of the Consulship of Vibulanus and Barbatus (or...

of Persia. 423 BC Sogdianus, King of Persia (assassinated) 422 BC Brasidas, Spartan general Cleon, Athenian politician and general 421 BC Cratinus, Greek...

was signed in 421 BC and lasted until 413 BC. Several proxy battles took place during this period, notably the battle of Mantinea in 418 BC, won by Sparta...

city-states of Athens and Sparta in March 421 BC that ended the first half of the Peloponnesian War. In 425 BC, the Spartans had lost the battles of Pylos...

Nicias in 421 BC swore to uphold it for fifty years, but peace lasted only seven years. The second stage of the Peloponnesian War began in 415 BC when Athens...

battle, all are hunted down and slain, except for Moroni. Between AD 401 and 421: Moroni finishes his father's work (Mormon 8); abridges the book of Ether...

The 5th century BC started the first day of 500 BC and ended the last day of 401 BC. This century saw the establishment of Pataliputra as a capital of...

before 399 BC. The terminus ante quem may be more precisely defined as being before 421 BC, since another Greek author, Biton (fl. 2nd century BC), whose...

Year 419 BC was a year of the pre-Julian Roman calendar. At the time, it was known as the Year of the Tribunate of Lanatus, Rutilus, Tricipitinus and Axilla...

of Nicias' peace, between 421 BC and 409 BC. Construction of the elegant temple of Erechtheion in Pentelic marble (421–406 BC) was by a complex plan which...