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

The President during the Great Depression and World War II was Franklin Roosevelt. He served from 1933 to 1945, a period marked by significant challenges for the United States, including economic turmoil and global conflict. Roosevelt introduced a series of programs and reforms known as the New Deal to address the economic hardships of the Great Depression, aiming to provide relief, recovery, and reform.

Additionally, his leadership during World War II was crucial as he mobilized the American economy for war production, implemented military strategies, and worked with allies to achieve victory. His ability to connect with the public and his persistent efforts to combat both economic and military crises solidified his legacy as a pivotal figure in American history. Therefore, Franklin Roosevelt's presidency is distinctly associated with both the Great Depression and World War II, which is why he is the correct answer.