thumb|The "Big Three" at the Yalta Conference in Crimea: Winston Churchill, Franklin D. Roosevelt, and Joseph Stalin In 1921 the Crimean Autonomous Soviet Socialist Republic was created as part of the Russian Soviet Federative Socialist Republic. It was occupied by Germany from 1942 to 1944 during the Second World War. After the Soviets regained control in 1944, they deported the Crimean Tartars and several other nationalities to elsewhere in the USSR. The autonomous republic was dissolved in 1945, and Crimea became an oblast of the Russian SFSR. It was transferred to the Ukrainian SSR in 1954, on the 300th anniversary of the Treaty of Pereyaslav.
thumb|The "Big Three" at the Yalta Conference in Crimea Winston Churchill Franklin D Roosevelt and Joseph Stalin In 1921 the Crimean Autonomous Soviet Socialist Republic was created as part of the Russian Soviet Federative Socialist Republic It was occupied by Germany from 1942 to 1944 during the Second World War After the Soviets regained control in 1944 they deported the Crimean Tartars and several other nationalities to elsewhere in the USSR The autonomous republic was dissolved in 1945 and Crimea became an oblast of the Russian SFSR It was transferred to the Ukrainian SSR in 1954 on the 300th anniversary of the Treaty of Pereyaslav