14. Franklin Roosevelt –IQ score: 139.6
Franklin D. Roosevelt, the 32nd president (1933–1945), stands as one of the most impactful leaders in U.S. history and the only president to serve three full terms. Taking office during the Great Depression, he launched the New Deal, a series of programs designed to revive the economy, including the creation of Social Security, which remains a cornerstone of American life today.
Roosevelt’s leadership during World War II further cemented his legacy. He declared war on Japan after the attack on Pearl Harbor, oversaw the development of the atomic bomb, and played a key role in shaping postwar Europe. Additionally, he collaborated with Allied nations to establish the framework for the United Nations, ensuring a lasting impact on global diplomacy. Roosevelt’s visionary leadership during times of crisis reshaped both America and the world.
