Aaron Burr! Hope that helps
Answer: In 1917, Germany, determined to win its war of attrition against the Allies, announced the resumption of unrestricted warfare in war-zone waters. Three days later, the United States broke diplomatic relations with Germany, and just hours after that the American liner Housatonic was sunk by a German U-boat.
Sorry for ur lost but ion have the answer
The United States used the sinking as propaganda to get the country on board for war