Media (, Middle Persian: Mād) is a region of north-western Iran, best known for having been the political and cultural base of the Medes. During the Achaemenid period, it comprised present-day Azerbaijan, Iranian Kurdistan and western Tabaristan. As a satrapy under Achaemenid rule, it would eventually encompass a wider region, stretching to southern Dagestan in the north. However, after the wars of Alexander the Great, the northern parts were separated due to the Partition of Babylon and became known as Atropatene, while the remaining region became known as Lesser Media.
History
Under the Medes
In 678 BC, Deioces united the Median tribes of Media and made the first Iranian Empire. His grandson Cyaxares managed to unite all Iranian tribes of Ancient Iran and made his empire a major power. When Cyaxares died he was succeeded by his son, Astyages, who was the last king of the Median Empire.
Under the Achaemenids
In 553 BC, Cyrus the Great, King of Persia, rebelled against his grandfather, the Median King, Astyages son of Cyaxares; he finally won a decisive victory in 550 BC resulting in Astyages' capture by his own dissatisfied nobles, who promptly turned him over to the triumphant Cyrus.
After Cyrus's victory against Astyages, the Medes were subjected to their close kin, the Persians. In the new empire they retained a prominent position; in honor and war, they stood next to the Persians; their court ceremony was adopted by the new sovereigns, who in the summer months resided in Ecbatana; and many noble Medes were employed as officials, satraps and generals. At the beginning the Greek historians referred to the Achaemenid Empire as a Median Empire.
After the assassination of the usurper Smerdis, a Mede Fravartish (Phraortes), claiming to be a scion of Cyaxares, tried to restore the Mede kingdom, but was defeated by the Persian generals and executed in Ecbatana (Darius I in the Behistun inscription). Another rebellion, in 409 BC, against Darius II was of short duration. But the Iranian tribes to the north, especially the Cadusii, were always troublesome; many abortive expeditions of the later kings against them are mentioned.
Under Persian rule, the country was divided into two satrapies: the south, with Ecbatana and Rhagae (Rey near modern Tehran), Media proper, or Greater Media, as it is often called, formed in Darius I the Great's organization the eleventh satrapy, together with the Paricanians and Orthocorybantians; the north, the district of Matiane, together with the mountainous districts of the Zagros and Assyria proper (east of the Tigris) was united with the Alarodians and Saspirians in eastern Armenia, and formed the eighteenth satrapy.
Caucasian Albania (roughly comprising northeast of modern-day Azerbaijan and southern Dagestan) was rapidly incorporated by the Achaemenid Persians and were under the command of the satrapy of Media in the later period.
When the Persian empire decayed and the Cadusii and other mountainous tribes made themselves independent, eastern Armenia became a special satrapy, while Assyria seems to have been united with Media; therefore Xenophon in the Anabasis always designates Assyria by the name of "Media".
Under the Seleucids
Following Alexander's invasion of the satrapy of Media in the summer of 330 BC, he appointed as satrap a former general of Darius III the Great named Atropates (Atrupat) in 328 BC, according to Arrian. In the partition of his empire, southern Media was given to the Macedonian Peithon; but the north, far off and of little importance to the generals squabbling over Alexander's inheritance, was left to Atropates.
While southern Media, with Ecbatana, passed to the rule of Antigonus, and afterwards (about 310 BC) to Seleucus I, Atropates maintained himself in his own satrapy and succeeded in founding an independent kingdom. Thus the partition of the country that Persia had introduced became lasting; the north was named Atropatene (in Pliny, Atrapatene; in Ptolemy, Tropatene), after the founder of the dynasty, a name still said to be preserved in the modern form 'Azerbaijan'.
The capital of Atropatene was Gazaca in the central plain, and the castle Phraaspa, discovered on the Araz river by archaeologists in April 2005.