Answer:
1. Start
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2. Background Conditions in Russia
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3. Russo-Japanese War and Bloody Sunday
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4. World War I and Economic Crisis
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5. February Revolution (1917)
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6. Abdication of Tsar Nicholas II
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7. Provisional Government
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8. Bolshevik Revolution (October Revolution)
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9. Rise of Bolsheviks and Lenin
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10. Civil War (1918-1922)
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11. Establishment of Soviet Union
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12. End
Explanation: