Ask us was the effect of the Zimmerman Telegram on World War 1?

The Zimmermann Telegram, sent by Germany to Mexico in January 1917, had a significant impact on World War I by prompting the United States to enter the conflict. The telegram proposed a military alliance between Germany and Mexico, promising the return of territories lost to the U.S. if Mexico joined the war against America. Once the telegram was made public, it swayed American public opinion against Germany, contributing to the U.S. declaration of war in April 1917. This entry bolstered the Allied powers and shifted the momentum of the war.