Greece in the 5th century BC BC, the Greeks, under the Spartan Pausanias, defeated the Persian army at Plataea. The Athenian fleet then turned to chasing the Persians out of the Aegean Sea, defeating their fleet decisively in the Battle of Cape Mycale, and in 478 BC the Athenian fleet captured Byzantium. In the course of doing so Athens enrolled all the island states and some mainland allies into an alliance, called the Delian League because the League's treasury was kept on the sacred island of Delos. The Spartans, although they had taken part in the war, withdrew from any further involvement, allowing Athens to become
Pleistarchus his tutor. It is unknown whether Pleistarchus was married. Pleistarchus' father King Leonidas perished in 480 BC at the Battle of Thermopylae. For the early part of Pleistarchus's reign, his uncle Cleombrotus acted as regent; after Cleombrotus's death in 479 BC, Pleistarchus's cousin Pausanias was regent. The successor of Pleistarchus was Pleistoanax, son of Pausanias. Pleistarchus Pleistarchus or Plistarch ( "Pleistarkhos"; died 458 BC) was the Agiad King of Sparta from 480 to 458 BC. He was born in 486 B.c. In Sparta, Greece. His family was Leonidas and Gorgo, who are uncles and nieces. He became king of Sparta