Analysis of information sources in references of the Wikipedia article "Timeline of Armenian history" in English language version.
Two days later, on December 4, Dro left Erevan for the lake Sevan area where he welcomed the Revkom and, in turn, gave up his power to the new Bolshevik administration. Two more days later, the first units of the red Army entered the Armenian capital. That was the end of the First republic, and independent Armenian statehood was interrupted for more than 70 years until August 1991. (Hovannisian, pp. 386–390)
Two days later, on December 4, Dro left Erevan for the lake Sevan area where he welcomed the Revkom and, in turn, gave up his power to the new Bolshevik administration. Two more days later, the first units of the red Army entered the Armenian capital. That was the end of the First republic, and independent Armenian statehood was interrupted for more than 70 years until August 1991. (Hovannisian, pp. 386–390)