America entered the World War I on account of sympathy.
The election took place during the time of the Mexican Revolution and World War I.
Although officially neutral in the European conflict, public opinion in the United States leaned towards the Allied forces headed by Great Britain and France against the German Empire and Austria-Hungary, due in large measure to the harsh treatment of civilians by the German Army in Belgium and northern France and the militaristic character of the German and Austrian monarchies, but in spite of their sympathy with the Allied forces most American voters wanted to avoid involvement in the war and preferred to continue a policy of neutrality
The German invasion of Poland. France and Britain told Hitler they would go to war with Germany if he invades Poland, so Hitler promptly invaded Poland.
