The reason given for the entry of the United States into the First World War was the resumption on unrestricted submarine warfare aggravated by trhe Zinnerman cable. Germany commencted unrestricted submarine warfare in 1915 almost bringing the United States into the war then abandoned it towards the end of 1915 following the sinking of an Italian passenger ship carrying American citizens.
At the end of January 1917 the Kaiser singed an order for unrestricted submarine warfare to resume. Shortly afterwards President Wilson broke off diplomatic relations leading chancellor Bethmann Hollweg to remark that "Germany is finished". However what if Bethmann-Hollweg had prevailed against the militarists in his cabinet? What if he had prevailed in 1915? There would have been no Zinnerman cable and no reason for America to enter the war. Russia would collapse in 1917 and there would have been a stalemate
At the end of January 1917 the Kaiser singed an order for unrestricted submarine warfare to resume. Shortly afterwards President Wilson broke off diplomatic relations leading chancellor Bethmann Hollweg to remark that "Germany is finished". However what if Bethmann-Hollweg had prevailed against the militarists in his cabinet? What if he had prevailed in 1915? There would have been no Zinnerman cable and no reason for America to enter the war. Russia would collapse in 1917 and there would have been a stalemate