1917 - U. S. Declares War
April 6, 1917 - Germany continues to sink non-military, or "civilian" ships, some American. The U.S. can no longer stay out of the war. Over the next two years, more than one million U.S. troops will go to fight the war in Europe, and help its friends, or "allies." The disputes of colonial times are long past, and the Americans join with Britain and France to become allies fighting against Germany.