The city of Eretria on the island of Euboea successfully rebels against the rule of Athens and Euboea is declared independent. The Athenian statesman and general, Phocion's tactical skills save an Athenian force sent to fight the supporters of Philip II on Euboea.
Roman Republic
Rome and Carthage make a trade agreement under which Carthage will not attack those Latin states which are faithful to Rome. This agreement demonstrates that Rome is now the dominant power in the Latin League.