- From the Wikipedia page: [1].
The Yakut Autonomous Soviet Socialist Republic (Russian: Якутская Автономная Советская Социалистическая Республика); Yakut: Саха автономнай сэбиэскэй социалистическэй республиката, or the Yakut ASSR (Якутская АССР) was an ethenic autonomous republic of the Russian SFSR within the Soviet Union.
It was created on April 27, 1922, during the Yakut Revolt and was transformed into the non communistSakha Republic in 1991.
The region has been known since it's settlement by Russians as 'Yakutia' after the local (Tungusic) Evenk tribes' name "Yokō" which they used in reference to the native (Mongolic) Shakha peoples.