History of Chechnya and Ingushetia (1934–1993)

When the Soviet Union existed, different governments had ruled the northern Caucasus regions of Chechnya and Ingushetia. Within the Mountain Autonomous Socialist Soviet Republic, later annexed into the Russian Socialist Federative Soviet Republic, they were known as the Chechen Autonomous Oblast and the Ingush Autonomous Oblast, which were unified on 15 January 1934, to form the Checheno-Ingush Autonomous Oblast.

Source: Wikipedia — History of Chechnya and Ingushetia (1934–1993) (CC BY-SA 4.0)