For much of the time it existed, theSoviet Union was engaged with theUnited States in a long conflict called A. World War I. B. World War II. C. the Gulf War. D.the Cold War. The Breakup of the Soviet Union198519911985Mikhail Gorbachevbecomes leader ofSoviet Union.1988New Soviet constitutionallows for open elections.1986Gorbachev launchesglasnostand perestroika reforms.1989Soviet electionsresult in defeat ofmany Communistcandidates.1990Lithuania declaresindependence;overthe next several months 13 other republicsfollow suit.1991Boris Yeltsin electedpresident of Russia. Communist and army hardliners seize power; Yeltsinleads resistance thatdefeats them. Soviet Union ceases to exist. S25For more test practice online . . .CLASSZONE .COMTEST PRACTICEFor more test practice online . . .CLASSZONE .COMTEST FOR TAKING STANDARDIZED TESTS