The document provides background information on World War I, including its causes, key events that drew the US into the war, and the impact of the war on America. It discusses the US initially maintaining neutrality but becoming engaged after German U-boats sank passenger ships like the Lusitania. Propaganda efforts convinced many Americans the war was necessary. The war had social and economic impacts domestically such as the Great Migration and increased roles for women. President Wilson advocated his Fourteen Points plan and League of Nations to promote peace after the war.