On May 7, 1915 the Lusitania has been sunk by German U-Boats. The Lusitania was on a voyage from New York to Liverpool. On board there were over 1,900 passengers and 1,100 of them had died when the ship sank. 120 of those passengers were Americans, which was deeply concerning for the United States. The Lusitania sinking was one of the most significant events that led to the United Stating entering the war because it was a directly affected American lives. Although Woodrow Wilson pledged to be neutral in the war, this event had sparked the nation and after it happened the United States couldn't stand on the sidelines any longer. Sometime later it was revealed that the Lusitania was holding war supplies, however the killing of innocent Americans did not justify the means.