How did Zimmerman telegram influenced the us entry?

The Zimmermann Telegram, sent by Germany to Mexico in January 1917, proposed a military alliance against the United States, promising Mexico the territories of Texas, New Mexico, and Arizona if Germany won the war. When the British intercepted and revealed the telegram to the U.S. government, it generated widespread outrage and fueled anti-German sentiment among the American public. This, combined with unrestricted submarine warfare by Germany, ultimately swayed public opinion and helped propel the U.S. to enter World War I in April 1917. The telegram highlighted the perceived threat Germany posed to American security and interests, making intervention seem necessary.