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Events on Saturday 12 November 1927 1
1927Trotsky expelled from the Communist PartyStalin defeats the Left OppositionLeon Trotsky and Grigory Zinoviev were expelled from the Communist Party of the Soviet Union. The Fifteenth Party Congress in December confirmed the defeat of the Left Opposition. Stalin was left in control of the party, and Trotsky was sent into internal exile in Alma-Ata early the next year.