WORLD HISTORY

Detailed explanation-1: -Trotsky initially opposed some aspects of Leninism but eventually concluded that unity between the Mensheviks and Bolsheviks was impossible and joined the Bolsheviks. Trotsky played a leading role with Lenin in the October Revolution.

Detailed explanation-2: -Trotsky takes charge The transformation of the Red Army began in March 1918 with the appointment of Leon Trotsky as war commissar. Most historians agree that Trotsky’s leadership was instrumental in crafting the Red Army into a professional military force.

Detailed explanation-3: -Joseph Stalin, who succeeded Lenin as leader of the Communist Party of the Soviet Union and of world Communism, was an expert in all fields.

Detailed explanation-4: -Trotsky founded the Red Army with an initial Red Guard organization and a core soldiery of Red Guard militiamen and the Cheka secret police. Conscription began in June 1918, and opposition to it was violently suppressed.