What reasons did the United States have for entering the war? (click all that apply) Question 7 options: The outrage of American citizens over German submarine warfare. The sinking of the Lusitania. The discovery of the Zimmerman Note. Concern over the repayment of Allied debts to American banks. The success of "yellow journalism" in the US media. A desire to control European politics. A moral obligation to halt the refugee crisis in Serbia.