|Metapedia Fundraiser 2018: The Internet is the foremost field in the metapolitical battle of our time. Help us hold down the front.|
The most widespread entity considered to have been a Persian Empire was the Achaemenid Empire (550–330 BC) under Darius and Xerxes (or Xerkes) — famous in antiquity as the foe of the classical Greek states (See Greco-Persian Wars) — a united Persian kingdom that originated in the region now known as Pars province (Fars province) of Iran.
It was formed under Cyrus the Great, who overthrew the empire of the Medes, and conquered much of the middle east, including the territories of the Babylonians (Asuristan), the Phoenicians, and the Lydians. Cyrus' son, Cambyses, continued Cyrus' conquests by conquering Egypt.
Most of the successive states in Greater Iran prior to March 1935 are collectively called the Persian Empire by Western historians.