How did the Zimmerman note lead the United States closer to war ?

The Zimmerman Note was a secret diplomatic communication sent from the German Foreign Minister, Arthur Zimmerman, to the German Ambassador to Mexico, Heinrich von Eckardt, in January 1917. The note proposed an alliance between Germany and Mexico in the event of the United States entering World War I. It proposed that if the United States declared war on Germany, Mexico would join the war on the side of Germany and receive financial and military support from Germany. The note also proposed that Mexico would receive the states of Texas, New Mexico, and Arizona as part of the alliance.

The Zimmerman Note was intercepted by the British and shared with the United States. The note caused outrage in the United States and was seen as a direct threat to the country. It was a major factor in the United States' decision to declare war on Germany in April 1917. The Zimmerman Note was a major factor in bringing the United States closer to war and was a major factor in the United States' entry into World War I.