and Pamphylia. Cappadocia initially included Cilicia, also known as Cappadocia-beside-the-Taurus, and Paphlagonia.

Assyria was a Main Satrapy of the Great Satrapy of Babylon, and included Cilicia, while Armenia was a Main Satrapy within the Great Satrapy of Media.

Anatolia remained one of the most principal regions of the empire during its entire existence. During the reign of Darius the Great,