4 nuclear reactor in the Chernobyl Nuclear Power Plant , near the city of Pripyat in the north of the Ukrainian Soviet Socialist Republic .

The Croatian War Military_operation of Independence was fought Hostile_encounter from 1991 to 1995 between Croat forces loyal to the government of Croatia—which had declared Expressing_publicly independence Change_of_leadership from the Socialist Federal Republic of Yugoslavia ( SFRY ) —and the Serb-controlled Yugoslav People 's Army ( JNA ) and local Serb forces , with the JNA ending its combat Hostile_encounter operations Military_operation in Croatia by 1992 .

The Cambodian–Vietnamese War ( ) , known Know in Vietnam as the Counter-offensive Defending on the Southwestern border ( ) , was an armed conflict Hostile_encounter between the Socialist Republic of Vietnam and Democratic Kampuchea .

The Soviet Union appended Connect the annexed territories to the Ukrainian Soviet Socialist Republic , the Byelorussian Soviet Socialist Republic and the Lithuanian Soviet Socialist Republic .

The Soviet Union appended Connect the annexed territories to the Ukrainian Soviet Socialist Republic , the Byelorussian Soviet Socialist Republic and the Lithuanian Soviet Socialist Republic .

The Soviet Union appended Connect the annexed territories to the Ukrainian Soviet Socialist Republic , the Byelorussian Soviet Socialist Republic and the Lithuanian Soviet Socialist Republic .

The operation led to Causation a Soviet counteroffensive resulting Causation in the creation of the short-lived Galician Soviet Socialist Republic , and ended Process_end amicably with the formal Peace of Riga of 1921 .

In Group B , the Socialist Federal Republic of Yugoslavia made Creating their final World Championship appearance before the breakup Dispersal of that nation .

The war Military_operation involved Cause_to_be_included Latvia ( its provisional government supported Supporting by Estonia , Poland and the Western Allies—particularly the navy of United Kingdom ) against the Russian SFSR and the Bolsheviks ' short-lived Latvian Socialist Soviet Republic .

Until 1990 , 27 July was a national holiday in the Socialist Republic of Croatia called Name_conferral `` Uprising Day of the People of Croatia '' .

The event marked Recording the end Process_end of the Vietnam War Hostile_encounter and the start Process_start of a transition Change period to the formal reunification Cause_to_amalgamate of Vietnam into the Socialist Republic of Vietnam .

Soviet power was established Creating in the newly independent republics of Armenia , Azerbaijan , Belarus , Georgia and Ukraine which led to Causation their unification into the Union of Soviet Socialist Republics ( USSR ) in 1922 .

After the Congress of Soviets , the newly governing body , had its second session it elected Choosing members of the Bolsheviks and other left-wing groups such as the Left Socialist Revolutionaries to important positions within the new state of affairs .

The captain of the Aeroflot aircraft , Nikolai Dmitrijev ( born 18 October 1931 ) , was a Hero of Socialist Labor and one of the Soviet Union 's most decorated civil airline pilots .

Following the Slovenian and Croatian secessions from the Socialist Federal Republic of Yugoslavia in 1991 , the multi-ethnic Socialist Republic of Bosnia and Herzegovina – which was inhabited Come_together by mainly Muslim Bosniaks ( 44 percent ) , as well as Orthodox Serbs ( 32.5 percent ) and Catholic Croats ( 17 percent ) – passed a referendum Request for independence on 29 February 1992 .

Following the Slovenian and Croatian secessions from the Socialist Federal Republic of Yugoslavia in 1991 , the multi-ethnic Socialist Republic of Bosnia and Herzegovina – which was inhabited Come_together by mainly Muslim Bosniaks ( 44 percent ) , as well as Orthodox Serbs ( 32.5 percent ) and Catholic Croats ( 17 percent ) – passed a referendum Request for independence on 29 February 1992 .