An kafa kungiyar ta Triple Alliance ne daga bangarorin da suka yi nasara a yakin basasa da aka gwabza tsakanin birnin Azcapotzalco da tsoffin lardunansa.Duk da tunanin farko na daular a matsayin ƙawance na biranen birni uku masu cin gashin kansu, Tenochtitlan da sauri ya zama mafi rinjaye a fagen soja.A lokacin da Mutanen Espanya suka isa a cikin 1519, ƙasashen Alliance sun kasance sun yi mulki sosai daga Tenochtitlan, yayin da sauran abokan tarayya a cikin kawancen sun dauki matsayi na biyu.Haɗin kai ne na jahohin Nahua altepetl guda uku: Mexico -Tenochtitlan, Tetzcoco, da Tlacopan.Waɗannan jahohin birni uku sun mallaki yankin a ciki da kewayen kwarin Mexico daga 1428