 Over the next 30 years the Greeks, primarily the Athenian-dominated Delian League, would expel (or help expel) the Persians from Macedon, Thrace, the Aegean islands and Ionia.Peace with Persia came in 449 BC with the Peace of Callias, finally ending a half-century of warfare.Plataea and Mycale have great significance in ancient history as the battles that decisively ended the second Persian invasion of Greece, thereby swinging the balance of the Greco-Persian Wars in favour of the Greeks.