Parthian EmpireThe Parthian Empire (ˈpɑrθiən), also known as the Arsacid Empire (ˈɑrsəsɪd), was a major Iranian political and cultural power in ancient Iran from 247 BC to 224 AD. Its latter name comes from its founder, Arsaces I, who led the Parni tribe in conquering the region of Parthia in Iran's northeast, then a satrapy (province) under Andragoras, who was rebelling against the Seleucid Empire. Mithridates I (171-132 BC) greatly expanded the empire by seizing Media and Mesopotamia from the Seleucids.
Media (region)Media (Māda, 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.
AtropateneAtropatene (Ātṛpātakāna; Ἀτροπατηνή), also known as Media Atropatene, was an ancient Iranian kingdom established in 323 BC by the Persian satrap Atropates. The kingdom, centered in present-day northern Iran, was ruled by Atropates' descendants until the early 1st-century AD, when the Parthian Arsacid dynasty supplanted them. It was conquered by the Sasanians in 226, and turned into a province governed by a marzban ("margrave").
King of KingsKing of Kings was a ruling title employed primarily by monarchs based in the Middle East. Although most commonly associated with Iran (historically known as Persia in the West), especially the Achaemenid and Sasanian Empires, the title was originally introduced during the Middle Assyrian Empire by king Tukulti-Ninurta I (reigned 1233–1197 BC) and was subsequently used in a number of different kingdoms and empires, including the aforementioned Persia, various Hellenic kingdoms, Armenia, Georgia, and Ethiopia.