Ukrainian Soviet Socialist Republic
Eventually, after the creation of the Communist Party (Bolshevik) of Ukraine in Moscow, a third Ukrainian Soviet government was formed on 21 December 1919 that initiated new hostilities against Ukrainian nationalists as they lost their military support from the defeated Central Powers. Eventually, the Red Army ended up controlling much of the Ukrainian territory after the Polish-Soviet Peace of Riga. On 30 December 1922, along with the Russian, Byelorussian, and Transcaucasian republics, the Ukrainian SSR was one of the founding members of the Union of Soviet Socialist Republics (USSR).
Ukrainian Soviet Socialist Republic
Geographically, the Ukrainian SSR was situated in Eastern Europe to the north of the Black Sea, bordered by the Soviet republics of Moldavia, Byelorussia, and the Russian SFSR. The Ukrainian SSR's border with Czechoslovakia formed the Soviet Union's western-most border point. According to the Soviet Census of 1989 the republic had a population of 51,706,746 inhabitants, which fell sharply after the breakup of the Soviet Union. On January 1, 2018, according to the State Statistics Committee of Ukraine the population of the country was 42,216,766 permanent residents.