Who were Cyrus's successors?

Cyrus the Great's successors included his son Cambyses II, who continued his father's conquests by invading Egypt. After Cambyses, Darius I ascended to the throne, known for consolidating the empire and implementing administrative reforms. Following Darius, Xerxes I, his son, is noted for his invasion of Greece, particularly during the Battle of Thermopylae and the subsequent naval engagement at Salamis.