Soviet power was initially established in the region in 1919, and the Kara-Kyrgyz Autonomous Oblast was created within the Russian SFSR (the phrase Kara-Kirghiz was used until the mid-1920s by the Russians to distinguish them from the Kazakhs, who were also referred to as Kirghiz). On 5 December 1936, the Kirghiz Soviet Socialist Republic was established as a constituent Union Republic of the Soviet Union.