 In 1828, Russia annexed Yerevan, Nakhichevan, and the surrounding countryside with the Treaty of Turkmenchay.Armenians still living under Persian rule were encouraged to emigrate to Russian Armenia and 30,000 followed the call.In 1828, the Russians declared Russo-Turkish War, 1828-1829 and in the Treaty of Adrianople, Akhalkalak and Akhaltsikhe exchanged to Russia.