Yakut Autonomous Soviet Socialist Republic

The Yakut Autonomous Soviet Socialist Republic (Якутская Автономная Советская Социалистическая Республика; Саха автономнай сэбиэскэй социалистическэй республиката), also known as Soviet Sakha, Soviet Yakutia or the Yakut ASSR (Якутская АССР, Yakutskaya ASSR), was an autonomous republic of the Russian SFSR within the Soviet Union.

History
It was created on 27 April 1922, during the Yakut revolt, and was transformed into the Sakha Republic in 1991.