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).
Zakarpattia Oblast
In October 1944 the Sub-Carpathian Ukraine was occupied by the Red Army. On 26 November 1944 in Mukacheve took place the First Congress of People's Committees of Zakarpattia Ukraine, elections to which took place in November 10-25, 1944. In June 29, 1945, Czechoslovak President Edvard Beneš signed a treaty ceding the area and the next month it was united with the Ukrainian SSR through the "Manifest for unification with the Soviet Ukraine" that was accepted by the 1st Congress of People's Committees of Sub-Carpathian Ukraine without any knowledge of common people. It was then annexed into the Ukrainian SSR as Zakarpattia Oblast. After the break-up of the Soviet Union, it became part of independent Ukraine.