Media , ancient country of W Asia whose actual boundaries cannot be defined, occupying
generally what is now W Iran and S Azerbaijan. It extended from the
Caspian Sea to the Zagros Mts. The Medes were an Indo-European people
who spoke an persian language closely akin to old Persian. Some scholars
claim they were an Aryanized people from Turan. Since there are no Median
records, Assyrian and Greek sources must be relied upon for Median history.
The Medes extended their rule over Persia during the reign of Sargon (d. 705 B.C.) and under Cyaxares captured Nineveh in 612 B.C.; they were the first people subject to Assyria to secure their freedom. The
dynasty continued until the rule of Astyages, when it was overthrown (c.550 B.C.) by Cyrus the Great and united with the Persian
Empire. In the 2d cent. B.C. Media became part of the Parthian kingdom and was later ruled by the Romans.