Which statement marks the end of the Russian Civil War?

• A. Red victory; suppression of White armies by 1921-1922; final alignment of power with Bolsheviks; Kronstadt rebellion.
• B. White army victory and collapse of Bolsheviks.
• C. International invasion ended civil war.
• D. Peace treaty with Allies concluded the war.

Answer: (A)

The main idea here is when the Bolsheviks finally solidified control after the fighting ended. The Civil War effectively finished with the Red Army defeating the White armies by about 1921–1922, allowing the Bolsheviks to consolidate power across Russia. The Kronstadt rebellion in 1921, though it did not overturn Bolshevik rule, was the last major internal challenge, showing that opposition existed even after most fighting had ended. Other statements don’t fit because White victory would contradict what happened, international invasion did not end the war, and a peace treaty with the Allies did not abruptly end the fighting across the country. So the best choice links the military victory with the political consolidation and includes the last significant internal challenge.