Review the outcome of World War I, the Fourteen Points, and the League of Nations. Following the end of World War I, President Woodrow Wilson waged a long and ultimately unsuccessful campaign for the United States to join League of Nations in the belief that it would help create a lasting peace. As part of this effort, Wilson embarked on a grueling speaking tour to arouse popular support for his program. He hoped to create pressure on the reluctant Republican-controlled Senate, which had to ratify both the Treaty of Versailles and league membership.

When Wilson suffered from an acute headache and nervous exhaustion after delivering a passionate speech in Pueblo, Colorado, his doctor canceled the rest of the trip. On October 2, 1919, Wilson suffered a stroke that paralyzed his left side. The aborted speaking trip, though well-received by the American people, did not change one vote in the Senate. It refused to ratify either the treaty or membership in the league.