Final answer:
In 480 BC, Xerxes, the son of Darius, invaded Greece but was defeated by the Greek Navy at the Battle of Salamis. He assembled a large army and navy, but the Greeks formed a defensive coalition and successfully defended against the invasion.
Step-by-step explanation:
In 480 BC, Xerxes, the son of Darius, invaded Greece but was defeated by the Greek Navy at the Battle of Salamis as he returned to Persia. Xerxes assembled a huge army and navy to invade Greece, with as many as 200,000 soldiers and 1,200 ships. However, the Greek poleis formed a defensive coalition led by Athens and Sparta, and the Spartans took leadership of the land army, while the Athenians attacked the Persian navy.