Final answer:
The Zimmerman Note proposed an alliance between Germany and Mexico to fight against the United States during World War I.
Step-by-step explanation:
The Zimmerman Note proposed an alliance between Germany and Mexico. It was a secret diplomatic communication sent by Arthur Zimmermann, the German Foreign Secretary, during World War I. The note suggested that if Mexico were to join Germany in the war against the United States, Germany would help Mexico regain territory it had lost to the U.S. in the Mexican-American War.
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