Answer:
the return of Mexican lands held by the United States
Explanation:
The European nations experienced the outbreak of World War 1 in 1914. The United States endeavored to remain neutral during the war. In 1917, that position changed because of a note sent by Arthur Zimmermann, a civil servant in Germany, to the German ambassador to Mexico named Heinrich von Eckardt.
In that note, Germany promised Mexico the recovery of lands lost to America such as, Texas, New Mexico and Arizona in return for engaging the United States in war. The note was intercepted by British intelligence and given to the United States which led to the declaration of war by congress with the approval of President Woodrow Wilson on April 6, 1917.
