What was a major consequence of the Bolshevik Revolution?

The Bolshevik Revolution, which took place in 1917, led to the establishment of Soviet Russia, making this the correct answer. The revolution resulted in the overthrow of the Provisional Government and the installation of a Marxist regime led by the Bolsheviks, led by figures such as Vladimir Lenin. This regime set the foundation for the Soviet state, which would evolve into a major global power in the 20th century. The consolidation of power by the Bolsheviks marked the beginning of a new political and social order in Russia, profoundly impacting both domestic policies and international relations.

The other options reflect significant historical events but do not result directly from the Bolshevik Revolution. NATO, established in 1949, was a military alliance formed after World War II primarily in response to the perceived threat from the Soviet Union, which materialized after the revolution but was not a direct consequence of it. The end of World War I occurred in 1918 and was not directly linked to the Bolshevik Revolution, though the turmoil in Russia did contribute to shaping post-war politics. The Cold War, which began later in the late 1940s, resulted from a series of geopolitical tensions and ideological conflicts following World War II, significantly influenced by