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Xerxes I (born c. 519 bce—died 465, Persepolis, Iran) was a Persian king (486–465 bce), the son and successor of Darius I. He is best known for his massive invasion of Greece from across the Hellespont (480 bce), a campaign marked by the battles of Thermopylae, Salamis, and Plataea. His ultimate defeat spelled the beginning of the decline of the Achaemenid Empire. Xerxes was the son of Darius I and Atossa, daughter of Cyrus; he...