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).
Modern history of Ukraine
In 1922, the Ukrainian Soviet Socialist Republic, together with the Russian Soviet Federative Socialist Republic, the Byelorussian Soviet Socialist Republic and the Transcaucasian Socialist Federative Soviet Republic, became the founding member of the Soviet Union. The Soviet famine of 1932–33 or Holodomor killed an estimated 6 to 8 million people in the Soviet Union, the majority of them in Ukraine.