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October Revolution
The Bolshevik Party led by Lenin launched a general attack on the Winter Palace in St. Petersburg, overthrew the Provisional Government and established the Soviet regime -
The second leader of the Republic
after Vladimir Lenin dies, Joseph Vissarionovich Dsugashvili becomes the new leader -
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five years plan
The five-year plan is an economic plan implemented by Stalin,the plan was to realize the industrialization and modernization -
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famine
7-10 million people died of famine,The agricultural collectivization policy implemented by the Soviet Union at that time partly exacerbated the spread of famine -
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Great Purge
A campaign of political repression erupted under Soviet leader Stalin in 1934,During the purges, 1.3 million people were sentenced, of which 682,000 were shot -
Molotov–Ribbentrop Pact
A secret agreement between the Soviet Union and Nazi Germany signed in Moscow. Molotov was represented on the Soviet side and Ribbentrop on the German side. The treaty divided the spheres of influence of the Soviet Union and Germany in Eastern Europe. -
Operation Barbarossa
Nazi Germany launched a huge military campaign to attack the Soviet Union. This marked the outbreak of the Soviet-German War, which caused great damage and casualties to the Soviet Union. -
The Soviet Union was formally established
A congress was held in the Bolshoi Theatre, at which the Declaration of the Union of Soviet Socialist Republics and the Union Treaty were adopted.