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Russian Social Democratic Labor Party splits into Bolsheviks (led by Lenin) and Mensheviks
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Period: to
Russo-Japanese War
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Russian Revolution of 1905
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Start of WWI
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Murder of royal advisor Grigori Rasputin
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February Revolution leads to Abdication of Tsar Nicholas II and to rule by provisional government
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October Revolution led by the Bolsheviks under Vladimir Lenin
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Period: to
Russian civil war between the Reds and Whites, with foreign aid supplied to Whites.
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Lenin orders the executions of Nicholas II and his family.
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USSR (Soviet Union) officially established.
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Death of Vladimir Lenin