The Achaemenid Empire or Persian Empire (550–330 BCE) was the successor state of the Median Empire, ruling over significant portions of what would become Greater Iran. The Persian and the Median Empire taken together are also known as the Medo-Persian Empire, succeeding the Neo-Assyrian Empire. It was succeeded in turn by the Seleucid Empire.
A map of the Persian Empire at its greatest Extent. The map shows the Persian Empire extending from the Aegean Sea to the Aral and South past Jerusalem. Persia: A colorful map of the empire. The Persian Empire about 500 B.C.