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WW1 Starts
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Germany helps Lenin leave Switzerland
They help him go through Sweden to then get into Russia. -
Lenin returns to Russia
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Revolution Ends
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WW1 Ends
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Lenin creates first Gulag Camp
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Stalin becomes general secretary if the Communist Party
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Lenin Dies
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Stalin Takes Over the Gulag System
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WW2 Starts
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WW2 Ends
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Stalin Dies
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Gulag System Is Officially Abolished