Some of the Greek city-states joined with Persia, the southern cities opposed the Persian attempt to absorb them into the Persian empire.
Persian king Cambyses brought Egypt into the Persian Empire.
The Persian Empire .
At its peak, the estimated population of the Persian Empire was around 50 million people.
The Persian Empire was established and expanded to its greatest area.
The Persian Empire and a couple of hundred of the city-states of the Greek world.
The Persian Empire.
The Persian Empire was not a person.
The Delian League was charged with fighting the Persian Empire during the Greco-Persian Wars.
Persian Empire
The Persian Empire absorbed the Babylonian Empire.
Alexander the Great defeated the Persian empire