The terms "Eastern" or "Persian" Armenia and 'Turkish" or "Western" Armenia were soon coined by contemporary travelers, geographers, and historians.
For the next eight decades Eastern Armenia remained under the control of the Safavids, who divided it into two administrative units: Chukhur-i Sa'ad, or the territory of Erevan and Nakhichevan ... Chukhur-i Sa'ad was composed of sections from the historic Armenian provinces of Ayrarat, Gugark, and Vaspurakan.
Hence by the second haf of the eighteenth century, Eastern Armena was composed of four khanates: Erevan, Nakhichevan (which included a number of settlements south of Araxes River), Karabakh (which included Zangezur), and Ganja
