Who was the U.S. President during World War I?

Woodrow Wilson was the U.S. President during World War I, which lasted from 1914 to 1918, with the United States entering the war in 1917. Wilson's leadership during this period was marked by his focus on promoting peace and his famous Fourteen Points, which outlined his vision for a post-war world order. Wilson believed that the U.S. should take an active role in the world, which included fighting against autocracy and promoting democracy and self-determination for nations.

The other individuals mentioned held presidential office either before or after World War I. Theodore Roosevelt served as president from 1901 to 1909, while Franklin D. Roosevelt and Harry Truman were presidents during World War II and in the subsequent years, with Roosevelt's tenure beginning in 1933 and Truman taking office in 1945. This historical context firmly places Woodrow Wilson as the president during the duration of World War I.