Who was the primary architect of the Soviet Union's transition to communism?

Vladimir Lenin was the primary architect of the Soviet Union's transition to communism. After the Bolshevik Revolution in 1917, he played a crucial role in establishing a communist government in Russia. Lenin's interpretation of Marxism emphasized the need for a vanguard party to lead the proletariat in overthrowing capitalism, which he implemented through revolutionary action. His leadership allowed the Bolsheviks to consolidate power and begin the transformation of Russia into a socialist state. Lenin's policies, including the New Economic Policy (NEP) and his writings on the state and revolution, were foundational to the establishment of a communist regime in the Soviet Union, influencing the direction of the nation for years to come. This foundational work is what makes Lenin the key figure in the transition to communism, while others like Trotsky, Stalin, and Engels played significant but different roles in the broader context of Marxist theory and Soviet history.