The Russian Revolution had a profound impact on world politics, signaling the rise of socialism and communism as formidable political ideologies. Beginning in 1917, the revolution led to the overthrow of the Tsarist regime and the establishment of a communist government under the Bolsheviks. This shift inspired socialist movements worldwide, leading to political upheavals and changes in various countries. The revolution also prompted the formation of the Soviet Union, which became a significant player in global affairs. Additionally, it contributed to the ideological divide of the Cold War, influencing international relations and political structures throughout the 20th century.