Ukrainian SSR

The Ukrainian SSR (Ukrainian Українська Радянська Соціалістична Республіка, Russian Украи́нская Сове́тская Социалисти́ческая Респу́блика) was a constituent republic of the Soviet Union since the USSR was formed in 1922, and was internationally recognised as an independent state in its own right (with a seat in the United Nations) after World War II.
The capital was first Kharkov (in 1918-1934) and then Kiev. Crimea was transferred to the SSR in 1954 from the Russian SFSR.
It declared independence in 1991 as Ukraine.
See also