Artsakh (Karabakh) is an integral part of historic Armenia. During the Urartian era (9-6th cc. B.C.) Artsakh was known as Urtekhe-Urtekhini. As a part of Armenia Artsakh is mentioned in the works of Strabo, Pliny the Elder, Claudius Ptolemy, Plutarch, Dio Cassius, and other ancient authors. The evident testimony of it is the remained rich historic-cultural heritage.
After the division of Greater Armenia (387 A.D.), Artsakh became part of the Eastern Armenian kingdom, which soon fell under the Persian rule. At that time, Artsakh was a part of the Armenian marzpanutyun (province), then, in the period of Arabic rule, it was part of Armenia kusakalutyun (region). Artsakh was part of the Armenian kingdom of Bagratids (9-11th cc.), then – part of Zakarid Armenia (12-13th cc.).
https://www.presiden...en/Artsakh-nkr/