What happened in 421 BC?
No event is dated precisely to 421 BC, but 2 entries are recorded in the surrounding period.
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Dated to the wider period
Wikidata records these 2 entries only to a century, decade or millennium rather than to a specific year. They are listed here because 421 BC is where that broader date falls, not because they are known to have happened in 421 BC.
5th century BC 1
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Thucydides died
Athenian statesman, son of Melesias
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420s BC 1
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Bu Shang died
5th-century BC prominent disciple of Confucius
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Around this time
The nearest recorded events on either side of 421 BC.
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Battle of Delium
424 BCE battle
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Battle of Megara
424 BCE battle between Athens and Megara
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Hippocrates died
Athenian general (c. 459 – 424 BC)
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Xerxes II died
Brief ruler of the Achaemenid Empire (died 424 BC)
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Sogdianus died
Brief ruler of the Achaemenid Empire (423 BC)
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Battle of Amphipolis
422 BCE military investment of Amphipolis by Sparta
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Ion of Chios died
5th-century BC Greek poet, dramatist and philosopher
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Cleon died
Athenian statesman and general (died 422 BC)
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Oenopides died
5th-century BCE Greek mathematician and astronomer
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Protagoras died
Pre-Socratic Greek philosopher (c.490–c.420 BC)
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Stesimbrotos of Thasos died
5th-century BC Greek sophist and logographer
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Iphicrates born
Born in Athens. Athenian general.
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