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).
Ukrainians in Hungary
As a result of the First Vienna Award, the southern part of Transcarpathia became part of Hungary again in 1938. After the breakup of Czechoslovakia in 1939, Hungary occupied and annexed the remainder of Carpathian Ruthenia. After the World War II, it was incorporated into the Soviet Union as a part of the province of the Ukrainian Soviet Socialist Republic by the Treaty of Paris in 1947.