1957 Event Checheno-Ingush ASSR reformed in RSFSR 1932 Event Kara-Kalpak Autonomous Region in RSFSR becomes Kara-Kalpak ASSR 1930 Event Abkhazian ASSR forms in Georgian SSR 1926 Event Kirghiz Autonomous Region in RSFSR becomes Kirghiz ASSR 1925 Event Chuvash Autonomous Region in RSFSR becomes Chuvash ASSR 1924 Event Nakhichevan ASSR constituted within Azerbaijan SSR 1922 Event Yakut ASSR formed in Russian SFSR 1921 Event Turkestan ASSR forms in Russian SFSR 1921 Event Dagestan ASSR forms in RSFSR 1920 Event Tatar ASSR forms in Russian SFSR 1919 Event Bashkir ASSR, in RSFSR, constituted
