What were the Persian Empire's wars and enemies?

Answer 1

After the Empire was established, their main problem was the Greek cities of Asia Minor which they had incorporated into the empire. These cities rebelled and it took six ears to suppress the revolt.some Greek cities in mainland Greece had supported the revolts, Persia decided to incorporate all the cities within the empire in order to control them. This resulted in a 50-year war until the Persians gave up. Then Macedonia dominated the European Greek cities and invaded the Persian Empire and took it over.

Answer 2

The Persian Empire and the Greek city-states of the eastern Mediterranean.

Answer 3

The Persian Empire versus varying alliances of Greek city-states.