WORLD CIVILIZATION

Detailed explanation-1: -Overview. The Achaemenid Persian Empire first expanded under the leadership of Cyrus the Great, who utilized a strategy of religious and cultural toleration to maintain order.

Detailed explanation-2: -By the time of Darius the Great and his son, Xerxes, the Achaemenid Empire had expanded to include Mesopotamia, Egypt, Anatolia, the Southern Caucasus, Macedonia, the western Indus basin, as well as parts of Central Asia, northern Arabia and northern Libya.