Franklin Delano Roosevelt (1882-1945) was the 32nd President of the United States, the only one to be elected to four consecutive terms, serving from 1933 until his death. His political career, which began as a New York State Senator and continued as governor, culminated in a presidency that faced two of the greatest crises of the 20th century: the Great Depression and World War II. To combat the economic crisis, he launched the New Deal, a vast program of reforms that introduced Social Security, public works agencies, and new financial regulations. During the war, he led the nation from isolationism to intervention alongside the Allies, playing a key role in planning for victory and laying the groundwork for the creation of the United Nations. He is universally recognized as one of the most influential figures of his time and is consistently ranked by historians among the greatest American presidents, alongside Washington and Lincoln.