One of the contributing factors to America's initial decision to enter into World War I was the Zimmermann Note. What were t contents of this telegram sent from Germany? A. Germany's insistence that the Mexican government refuse to assist the Allies with financial or military aid B. Germany's proposal that upon an alliance with Mexico, it would ensure the return of Mexican land lost to the United States. C. Germany's war secrets promised to the Mexican government after the United States entered the war. D. Germany's threat that upon a Mexican-American alliance, it would no longer engage in trade activities with Mexico.