1. what was a cause of the russian revolution? a. a large, restless middle class b. an autocratic monarchy c. victories on the battlefield in world war i d. a powerful legislature 2. a tsar was a russian leader in the early 1900s who was similar to a a. king b. senator c. governor d. president 3. in the early 1920s, lenin established the new economic policy, which a. instituted communist reforms and gave the economy a boost. b. instituted communist reforms and damaged the economy. c. reversed earlier changes and gave the economy a boost. d. reversed earlier changes and damaged the economy.