1- The correct answer is B. A cause of the Russian Revolution was the existence of an autocratic monarchy that ruled the nation.
The Russian Revolution led to the overthrow of the Tsarist regime and the prepared establishment of a Republic, between February and October 1917. The Tsar was forced to abdicate and the old regime was replaced by a provisional government during the first revolution of February 1917. In the second revolution, in October, the Provisional Government was eliminated and replaced with a Bolshevik (communist) government, the Sovnarkom.
2- The correct answer is A. A tsar was a Russian leader in the early 1900s who was similar to a king.
3- The correct answer is C. In the early 1920s, Lenin established the New Economic Policy, which reversed earlier changes and gave the economy a boost.
The New Economic Policy replaced the policies of war communism. While some Bolshevik leaders opposed it, it was considered necessary due to the circumstances to allow for limited private trade.