Woodrow Wilson was the president of the United States for the entirety of World War I. Elected in 1912, Wilson served from March 4, 1913 until March 4, 1921. The First World War began on the 28th of July in 1914 and ended in November of 1918.
Woodrow Wilson was reportedly reluctant to involve the United States in World War I, despite this however, Congress voted to declare war on Germany in 1917. The war, which resulted in the deaths of over 16 million people, cost the Americans more than 116,000 lives. In addition to guiding the U.S. through its time at war, Wilson also oversaw the creation of the Federal Reserve and the Federal Trade Commission, and helped to form the League of Nations.