Answer
Darius the Great was succeeded by his son, Xerxes I, who ruled the Persian Empire from 486 to 465 BCE. Xerxes is best known for his unsuccessful invasion of Greece in 480 BCE, which culminated in the famous Battle of Thermopylae. Despite his military setbacks, Xerxes was a successful administrator who expanded the Persian Empire and oversaw the construction of several monumental buildings, including the Palace of Persepolis.