. As a political-science term Leninism entered common usage in 1922, only after infirmity ended Lenin’s participation in governing the USSR. Two years later, in July 1924, at the fifth congress of the Communist International (Comintern), Grigory Zinoviev popularized Leninism as a Marxist ideological term denoting “revolutionary”. After the Union of Soviet Socialist Republics was established in 1922, its governing philosophy, Leninism, became the predominant branch of Marxism.… (More on Leninism)