Persia, ancient

Kingdom in southwestern Asia. The early Persians were a nomadic Aryan people who migrated through the Caucasus to the Iranian plateau. Cyrus organized the empire into provinces which were each ruled by Satraps. The royal house is known as the Achaemenids after the founder of the line. The administrative centre was Susa, with the royal palace at Persepolis.

Expansion led the Persians into conflicts with Greek cities, notably in the Ionian Revolt, Darius I's campaign that ended at the Athenian victory of Marathon (490 BC), and Xerxes I's full-blown invasion of the Greek mainland in 480.

For modern history see Iran.