Ku dhammee weedhan soo socota: Intii lagu jiray dagaalkii koowaad ee adduunka (1914-1918), Mexico dhexdhexaad bay ahayd. Waqtigaas, Mexico waxay ku mashquulsaneed
Bishii Janaayo 1917, askarta Ingiriiska waxay qabteen telegraam uu u diray Danjiraha Jarmalka ee Mexico Heinrich von Eckardt oo uu soo diray Arthur Zimmermann, Xoghayaha Arrimaha Dibadda ee Boqortooyadii Jarmalka. Jarmalka ayaa Mexico u soo jeediyay in hadii Mareykanka uu ku biiro dagaalka, Mexico ay ku biiri doonto oo garab istaagi doonto Dowladaha Dhexe. Mahadnaq ahaan, iyo haddii awoodaha dhexe ay guuleystaan, Mexico waxay dib u soo ceshan doontaa dhulka Texas, New Mexico iyo Arizona oo Mexico ay ku lumisay dagaalkii ay la gashay Mareykanka intii lagu jiray Dagaalkii Mexico iyo Mareykanka ee 1848. telegramka, oo loo yaqaano Zimmermann Telegram ayaa la qabtay markii telegramka loo diray safaaradda Jarmalka ee Washington, DC si loogu wareejiyo Mexico City. Mexico ayaa ugu danbeyn diiday telegraamkii waxayna sii waday inay dhexdhexaad ka ahaato intii lagu jiray dagaalka.