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

The correct answer is Woodrow Wilson because he served as the 28th president of the United States from 1913 to 1921, which includes the entirety of World War I, as it lasted from 1914 to 1918. Wilson played a crucial role in leading the nation during this tumultuous time, advocating for the U.S. to enter the war in 1917 after initially promoting a policy of neutrality. His administration focused on various reforms and significant wartime policies, including the establishment of the League of Nations, which aimed to promote peace and prevent future conflicts.

In contrast, Theodore Roosevelt was president from 1901 to 1909, preceding the war. Herbert Hoover served as president from 1929 to 1933, long after the conflict had ended. Calvin Coolidge held office from 1923 to 1929, also after World War I. Therefore, Wilson is the only option directly linked to the presidency during the time of World War I and its significant events.