8-4: Ending the War While American entry into World War I ensured Allied victory, the failure to conclude a lasting peace left a bitter legacy.

Fourteen Points Purpose Key Ideas Woodrow Wilson’s plan to eliminate the causes of war Key Ideas Self-Determination of Nations Countries should choose their kind of government without any outside interference Freedom of the Seas Countries can navigate oceans freely Mandate System Small countries administered by world powers League of Nations Peacekeeping body designed to resolve issues through diplomacy

Treaty of Versailles Punishment of Germany National Boundaries The French and English insisted on punishment of Germany Germany was required to pay for the total cost of the war National Boundaries Boundaries were redrawn, creating many new nations League of Nations Created to try to instill world peace rather than warfare

League Debate in the United States Objections Isolationists objected to U.S. foreign policy decisions made by an international organization Constitution—Congress declares war Disapproval of the Treaty The Senate failed to approve the Treaty of Versailles Isolationism The U.S. pursued an isolationist foreign policy for much of the 1920s and 1930s until the onset of World War II

How did visions of the postwar world differ?