Which Soviet leader addressed the terrible economic conditions of the Soviet Union after World War I and the Russian Civil War by implementing his New Economic Policy (NEP) ?

a. Trotsky

b. Stalin

c. Kerensky

d. Lenin

It would "Vladimir Lenin" who was the Soviet leader who addressed the terrible economic conditions of the Soviet Union after World War I and the Russian Civil War by implementing his New Economic Policy (NEP), since it was clear that Soviet Russia was quickly falling behind the west economically.