Franklin D. Roosevelt is best known for implementing the New Deal, a series of economic reforms designed to combat the Great Depression. Elected in 1932, FDR introduced bold programs to stabilize banks, create jobs, and boost public confidence. Agencies like the SEC and FDIC were established under his leadership, laying the groundwork for modern financial regulation. Roosevelt's fireside chats and decisive actions helped restore faith in the American system during one of its darkest periods. While controversial at the time, his policies fundamentally reshaped the relationship between government and the economy. His legacy remains central to discussions of federal economic intervention, and his leadership during both the Depression and World War II makes him one of the most consequential presidents in U.S. history.