Claim: Tlatoani was formed in in 1376 appointed by the council of elders and is the residence of Tenochtitlan whose religion is Mexica.
Evidence: The Aztec Empire was a confederation of three city-states established in 1427: Tenochtitlan, city-state of the Mexica or Tenochca; Texcoco; and Tlacopan, previously part of the Tepanec empire, whose dominant power was Azcapotzalco.