Q6. The Achaemenids of Iran conquered Babylon in (a) 639 BCE. (b) 539 BCE. (c) 439 BCE. (d) 339 BCE.
In 539 B.C., Persian forces defeated the Babylonian army at the site of Opis, east of the Tigris. Cyrus entered Babylon and presented himself as a traditional Mesopotamian monarch, restoring temples and releasing political prisoners.
