Arthur Zimmermann

Zimmermann was the person who was responsible for the Zimmermann note, one of the main reasons that America became involved in the Great War. He was the German Foreign Secretary, and sent a telegram to the German ambassador to Mexico during the war. It stated that in return for an alliance, Mexico would receive the territories taken by the United States during the 19th century, including Texas and New Mexico. This telegram was intercepted by British intelligence, who informed the United States.