It was an intercepted diplomatic communication between Mexico and the Prime Minister of Germany. The diplomatic agreement stated that they wanted Mexico to join Germany, the central powers, in World War I. If Mexico agreed, the Germany would help Mexico get the territories that they lost to the United States. The territories were Texas, New Mexico, and Arizona. The United States gets a hold of the telegram, which causes an uproar in the country. There was a lot tension between the U.S and Mexico because of everything that had happened before. The tension grew because of the take over in Veracruz, the Mexican revolution was happening, the expedition to find Pancho Villa and about the stationing of US troops in Mexico.