When was Marxism-Leninism instated in the Soviet Union?
Marxism–Leninism
1920s
In the late 1920s, after the death of Lenin, Stalin established universal ideologic orthodoxy in the Communist Party, the USSR, and the Communist International, with his coinage Marxism–Leninism, a term which redefined theories of Lenin and Marx to establish universal Marxist–Leninist praxis for the exclusive, geopolitical benefit of the USSR.[6][7] In the late 1930s, Stalin's official textbook The History of the Communist Party of the Soviet Union (Bolsheviks) (1938), made the term Marxism–Leninism common, political-science usage among communists and non-communists.[8]