Answer:
Communist Party of the Soviet Union (CPSU), also called (1925–52) All-Union Communist Party (Bolsheviks), Russian Kommunisticheskaya Partiya Sovetskogo Soyuza, or Vsesoyuznaya Kommunisticheskaya Partiya (Bolshevikov), the major political party of Russia and the Soviet Union from the Russian Revolution of October 1917 to 1991.
Explanation:
