According to Anania Shirakatsi's Ashkharatsuyts ("World Atlas," 7th century), Tsopk was the 2nd among the 15 provinces of Greater Armenia. It consisted of 8 cantons (gavars): Khordzyan, Hashtyank, Paghnatun, Balahovit, Tsopk (Shahunyats), Andzit, Degiq, and Gavreq (Goreq).
Tsopk was part of the kingdom of Urartu in the 8th-7th cc BC. After unifying the region with his kingdom in the early 700s BC, king Argishtis I of Urartu resettled many of its inhabitants to his newly built city of Erebuni (modern day Armenian capital Yerevan). Around 600 BC, Tsopk became part of the newly emerged ancient Armenian Kingdom of Orontids.
After Alexander the Great's campaigns in 330s BC and the subsequent collapse of the Achaemenid Empire, Tsopk remained part of the newly independent kingdom of Greater Armenia. In the early 200s BC, at the instigation of the Seleucid Empire, which was trying to weaken the Armenian kingdom, Tsopk, along with Commagene, split from Greater Armenia, forming the Hellenistic kingdom of Tsopk-Commagene. The kingdom was ruled by a branch of the Armenian royal dynasty of Orontids. Tsopk later split from the Tsopk-Commagene kingdom as well, forming an independent kingdom.
Around 200 BC, in his attempt to finally subjugate Armenia, Seleucian king Antiochus III conquered both Greater Armenia and Tsopk, installing Armenian generals Artaxias I and Zariadres as governors-strategoses respectively in each kingdom. Following Antiochus' defeat by Romans at the battle of Magnesia in 190 BC, both Zareh and Artashes declared themselves independent kings. Zareh and his descendants ruled the kingdom of Tsopk until it was reunified with Greater Armenia by Tigranes the Great in the 80s BC.
Pompey gave Sophene to Tigranes, after defeating his father Tigranes the Great. Sophene later become part of the Roman Empire, and was made into a province of the Roman Empire. The capital was Amida (modern Diyarbakır). Around 54, the province was ruled by Gaius Julius Sohaemus. In 530, Sophene was included into the province of Armenia IV.
- The History of Rome By Theodor Mommsen, William Purdie Dickson
- Anania Shirakatsi, Geography
- Richardson, Peter, Univ of South Carolina Press, 1996, p. 96
- Swain, Simon, Hellenism and Empire: Language, Classicism, and Power in the Greek World, Ad 50-250, Oxford University Press, 1996, p. 304.
- Joshua, The Chronicle of Pseudo-Joshua the Stylite, Liverpool University Press, 2001, p. 54