PersiaOne of the major empires that competed with Egypt in the Late Period (712-332 B.C.E.), the Persian Empire was vast and well controlled, despite the rising power of the Greeks and the dominance of the Medes in the Persian homeland. Cyrus the Great forged the true Persian Empire ca. 550 B.C.E.
The original Persians, members of the Indo-Europeans, were evident on the western Iranian plateau by 850 B.C.E. They were a nomadic people who claimed the name Parsa. By 600 B.C.E., they were on the southwestern Iranian plateau, dominated by the native Medes. The original capital of the Persians was Susa.
By 500 B.C.E., the Persian Empire extended from modern Pakistan in the Indus Valley to Thrace in the west and to Egypt in the south. The Persians ruled 1 million square miles of the earth at the height of their power. The raids of Darius I (r. 521-486 B.C.E.) into Thrace and Macedonia aroused a response that would result in the empire's destruction two centuries later. Alexander III the Great would bring about Persia's downfall in 332 B.C.E.
The first Persian to rule Egypt was Cambyses (r. 525-522 B.C.E.), who opened the Twenty-seventh Dynasty on the Nile. Cambyses was followed on the Persian throne by Darius I, Xerxes I (r. 486-446 B.C.E.), Artaxerxes I (r. 465-424 B.C.E.), and Darius II (r. 423-405 B.C.E.).
The Persians returned to rule as the Thirty-first Dynasty, or the Second Persian Period, in 343 B.C.E. This royal line, as were their predecessors, was plagued by profound internal problems in their homeland, with many emperors being slain. The rulers of Egypt during the Thirty-first Dynasty were Artaxerxes III Ochus (r. 343-338 B.C.E.), Artaxerxes IV Arses (r. 338-336 B.C.E.), and Darius III Codoman (335-332 B.C.E.).