Ukrainian Soviet Socialist Republic
The Ukrainian Soviet Socialist Republic (Ukrainian SSR or UkrSSR or UkSSR; , УРСР ; , УССР ; see "Name" section below), also known as the Soviet Ukraine, was one of the constituent republics of the Soviet Union from the Union's inception in 1922 to its breakup in 1991. The republic was governed by the Communist Party of Ukraine as a unitary one-party socialist soviet republic.
Communist Party of Ukraine (Soviet Union)
Most of its constituent members were former members of the Russian Bolsheviks who in 1917 pronounced themselves "RSDRP(b) – Social-Democracy of Ukraine" and with the help of the Antonov-Ovseyenko expeditionary forces of Petrograd and Moscow Red Guards instigated a civil war in Ukraine by routing local Red Guards. Number of Ukrainian politicians from left faction of the Ukrainian Social Democratic Labour Party (also known as Left Ukrainian Social Democrats or unofficially as "Ukrainian Bolsheviks") joined the Bolsheviks in January 1918.