After the Spartan threat had been removed, Pericles crossed back to Euboea to crush the revolt there. He then punished the landowners of Chalcis, who lost their properties. The residents of Histiaea, meanwhile, who had butchered the crew of an Athenian trireme, were uprooted and replaced by 2,000 Athenian settlers. The crisis was brought to an official end by the Thirty Years' Peace (winter of 446–445 BC), in which Athens relinquished most of the possessions and interests on the Greek mainland which it had acquired since 460 BC, and both Athens and Sparta agreed not to attempt to win over the other state's allies.