How would you characterize the Persian Empire?

Cyrus, the first king of the Persian Empire

was known as a just and noble king. He let go of the Israeli from

Judea who were taken captives by the Babylonians to return when he

took them out. After him came his son Xerxes who was in war with

the Greeks and the other kings after him were involved in battles

until Darius III lost to the Greek therefore the beginning of the

Greek Empire.