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1917 - February – April
February: Revolution led by Workers
March: Tsar Nicholas II abdicates and is detained with his family
Provisional Government (a coalition of liberals and moderate socialists) Decides on 3 points: food, land and war
April: Lenin (leader of the Bolsheviks) returns from exile with the support of Germany. His slogans was: Peace, Land, Bread and all power to the soviets. -
1917 - May / September
- Kerensky is appointed Minister of War, but fails to regain control.
- Kornilov (Army chief) attempts a coup, Kerensky wins with the support of the Bolsheviks
- The Bolsheviks get the support of the Petrograd Soviet, whose president was Leon Trotsky
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1917 - October
- 24 / 25 the Bolsheviks remove the provisional government.
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1918 Civil War
- March 1918 The Bolshevik party becomes the communist party
- July 1918 The Tsar and his family are executed
- Tsar supporters and counterrevolutionaries (The Whites) vs. The Bolsheviks (Red Army)
- The war lasts three years, 1918 - 1921
- Emergence of communism: industries in hands of the state
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1919 - Civil War
- Lenin creates the Third International that groups the communist parties of different countries
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1920 - Civil War
- White army is defeated in Crimea
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1921 - Civil War
- The Red Army under Trosky defeats the White Army
- The NEP (New Economic Policy) appears with the aim of rebuilding the economy
- Between 1921 and 1922, the famine, coupled with a serious typhus epidemic, ends the lives of millions of Russian peasants
- The Red Army under Trosky defeats the White Army
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1922
- The USSR (Union of Soviet Socialist Republics) is born
- Stalin is appointed Secretary General of the Communist Party
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1923 Lenin vs Stalin
- Lenin's letter to the central committee, known as the "Lenin's Testament".
- Lenin confronts Stalin against the bureaucratic state
- Breaking between Lenin and Stalin
- Lenin suffer several strokes in 1922 and 1923 which leave him paralysed
- Trostky writes the New Course
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1924 - Death of Lenin
- The communist party condemns Trosky's letter
- Lenin Dies on January 1924.
- Stalin, Kámenev y Zinóviev take control of the party
- Stalin removes power from Leon Trotsky whom he accused of "anti-Bolshevik revisionism" and a traitor to the popular and opportunist revolution
- Trotsky is progressively separated from power, exiled in 1929 and then assassinated in Mexico in 1940 by order of Stalin.