The cihuacoatl (Nahuatl for "female serpent", pronounced [siwaːˈkoːaːtɬ]) was a rulership position within the Aztec system of government. Nahuatl ( [1] is a term applied to a group of related languages and dialects of the Aztecan [2] branch of the Uto-Aztecan language family, indigenous to central Mexico. ... The Aztecs is a collective term used for all of the Pre-Columbian Mesoamerican peoples under the control of the Mexica, founders of Tenochtitlan, and their two principal allies, who built an extensive empire in the late Postclassic period in the 14th, 15th and 16th centuries in Central Mexico. ...