Roosevelt, along with Churchill, set much of the allies' military strategy and urged the creation of a United Nations to help prevent future wars of the magnitude of World War II.
The pressures of the war took a heavy toll on Roosevelt's health, and on April 12, 1945, while serving his fourth term as president, he died. His vice-president, Harry S. Truman, who saw the United States through the end of the war, succeeded him.
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