 Simultaneously it became part of the Soviet Mountain Republic, which was formed on January 20, 1921, and was the capital of the Chechen National Okrug inside it.On November 30, 1922, the mountain republic was dissolved, and the national okrug became the Chechen Autonomous Oblast (Chechen AO) with Grozny as the administrative center.At this time most of the population was still Russian, but of Cossack descent.