Answer:
Explanation: The Soviet leader who demonstrated a willingness to force civilians to work in support of the war effort was Joseph Stalin. During World War II, under Stalin's leadership, the Soviet Union implemented widespread measures to mobilize the entire population, including civilians, for the war effort against Nazi Germany. This included conscripting millions into the military and forcing many others to work in factories, farms, and construction projects to support the war effort. Stalin's regime was characterized by strict control, harsh measures, and a willingness to use force and coercion to achieve its goals.