"The Communist Party of the Soviet Union (CPSU)[a] was the founding and ruling political party of Soviet Russia and the Soviet Union. The CPSU was the sole governing party of the Soviet Union until 1990 when the Congress of People´s Deputies modified Article 6 of the 1977 Soviet Constitution, which had previously granted the CPSU a monopoly over the political system.
The party started in 1898 as the Bolsheviks, a majority faction from the Russian Social Democratic Labour Party, led by Vladimir Lenin, who seized power in the October Revolution of 1917. After 74 years, it was dissolved on 29 August 1991 on Soviet territory, soon after a failed coup d´état by hard-line CPSU leaders against Soviet president and party general secretary Mikhail Gorbachev. It was outlawed entirely three months later on 6 November 1991 on Russian territory." - (en.wikipedia.org 15.10.2020)
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