Woodrow Wilson was a prominent figure in the establishment of the League of Nations. As President of the United States during and after World War I, he advocated for the League as a means to promote international cooperation and prevent future conflicts. His Fourteen Points laid the groundwork for the League’s formation in 1920, emphasizing principles like self-determination and collective security. Although the U.S. did not join the League, Wilson's vision had a lasting impact on international relations and peacekeeping efforts.