450s BC

• The Jewish priest Ezra assembled and lead a band of approximately 5,000 Jews from Babylon to Jerusalem.

• Athens allied itself with the city state of Megara which was under pressure from Corinth. This alliance leads to war between Corinth and Athens. The first battle of the war, at Haliesis in the Gulf of Argolis, resulted in a Corinthian victory, but the next battle, the battle of Cecryphalea (modern Angistrion), went Athens' way.

• The Aequi occupied Tusculum. In response to the threat, the Roman Senate decided to send an army to help the allied city, under the command of consul Lucius Cornelius Maluginensis. In addition, the consul Fabius Vibulanus, who was at that point besieging Antium, moved his forces to attack Tusculum. The Tusculans were able to recapture their city. A truce was then arranged with the Aequi.

• The Sicilian town of Morgantina was destroyed by Ducetius, Hellenised leader of the Siculi (according to Diodorus Siculus).

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