Who served as President during both the Great Depression and World War II?

Franklin D. Roosevelt served as President during both the Great Depression and World War II, making him a pivotal figure in American history. He took office in 1933 and implemented the New Deal, a series of programs and policies aimed at economic recovery during the Great Depression. His leadership helped to stabilize the economy and restore public confidence.

During his presidency, which lasted until his death in 1945, Roosevelt also guided the nation through the complexities of World War II. His administration was instrumental in orchestrating U.S. efforts in the war, including material support for the Allies and military strategies, ultimately leading to victory in 1945.

The other individuals listed did not serve during both of these significant historical periods. Theodore Roosevelt, for example, was President from 1901 to 1909, well before the Great Depression and World War II. Harry S. Truman succeeded FDR and was in office after World War II had begun, while Dwight D. Eisenhower became president in 1953, long after both events had concluded. Thus, Franklin D. Roosevelt is the only correct answer for this question, as he uniquely addressed the challenges of both the Great Depression and World War II during his presidency.