The Russian Revolution in 1917 ended the centuries old Russian Empire, transforming it into the Union of Soviet Socialist Republics (USSR). It also took Russia out of World War I.

Through the Russian Revolution the USSR became the world’s first communist state. The formation of the USSR was to have dire implications in the coming years.

For more relevant articles, refer to the following links:

• Russian Revolution
• Key terms of the Russian Revolution
• October manifesto