Whakaotihia te rerenga e whai ake nei: Kua roa a Tiamana e whai ana ki te whakaohooho i te pakanga i waenganui i Mexico me te United States, e herea ai nga ope o Amerika me te whakaheke i te kaweake o nga patu o Amerika ki nga Allies. I awhina nga Tiamana ki te patu i Mexico, i whakaaturia e te 1914 Ypiranga Incident. I whakamatau te rangatira o te Rōpū Rangahau o te Moana Tiamana, a Franz von Rintelen ki te whakaoho i te pakanga i waenganui i Mexico me te United States i te tau 1915, i hoatu ki a Victoriano Huerta $ 12 miriona mo taua kaupapa. Ko te kaiwhakangungu Tiamana a Lothar Witzke, he kawenga mo te pahūtanga o nga patu i te Maehe 1917 i te Mare Island Naval Shipyard i te rohe o San Francisco Bay, a, he kawenga pea mo te pahūtanga o te Hōngongoi 1916 Black Tom i New Jersey, i noho ki Mexico City. Te hē o ngā hōia o Te Hononga o Amerika
ki te hopu i a Pancho Villa i te tau 1916 me te nekehanga a te Perehitini Carranza ki te painga o Tiamana i whakatenatena ai nga Tiamana ki te tuku i te tuhipoka Zimmermann.