Who was the President during the Great Depression and World War II?

The President during the Great Depression and World War II was Franklin D. Roosevelt. He served from 1933 to 1945, a pivotal time in American history. Roosevelt's first term began during the Great Depression, a severe worldwide economic downturn that greatly influenced his policies and responses. He implemented the New Deal, a series of programs and financial reforms designed to promote economic recovery and alleviate the hardships faced by Americans.

As the United States entered World War II following the attack on Pearl Harbor in 1941, Roosevelt played a crucial leadership role. He was the face of the nation during the war, working to mobilize resources, forming alliances with other nations, and shaping military strategy. His presidency encompassed both significant domestic challenges and the overarching crisis of global conflict, making his leadership critical in navigating those tumultuous times.

The other options reference presidents who did not serve during both of these significant periods, thus clarifying why they do not fit as the correct answer.