Cyrus the Great - Middle East, Central Asia.
Cambyses - Libya and Egypt.
Darius the Great - Indus Valley, Thrace.
Hadrian did not add any territories to the Roman Empire during his reign. He actually gave up some Roman territories. He gave the Persian back the territory his predecessor, Trajan, had conquered from them: Mesopotamia (Iraq). Hadrian pursued a policy of peace. Instead of carrying out conquests, he strengthened the fortification of the frontiers of the empire.
cambyses II. successor of Cyrus the Great.
Cyrus the Great, added to by Cambyses and Darius.
Egypt and Libya.
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Cambyuss or Cambses II was the son of the Persian king Cyrus the Great. He conquered Egypt and added it to the Persian Empire in 525BC.
Cambyses added Egypt-Libya to the Persian Empire.
He added an area in Central Asia, Thrace and Macedonia.
They took over the Babylonian Empire, then added to it by taking over Asia Minor, Central Asia, The Indus Valley, Libya, Egypt and northern Greece.
King Cyrus the Great, added to by his son Cambyses, and consolidated by Darius the Great.
He was king of Persia. He established the Persian Empire by capturing the Middle East and central Asia. He also had a son Cambyses who added Egypt and Libya to the empire and a son-in-law Darius I who added Thrace and today's Pakistan to it, both after he was killed busily trying to expand the empire.
He progressively added all of the Middle East and Central Asia to the core of Persia-Media.