As Nahuatl, carried by the Toltec and later the Aztec culture, became a lingua franca throughout Mesoamerica even some Mayan states such as the K'iche' Kingdom of Q'umarkaj adopted Nahuatl as a prestige language. In Oaxaca Zapotec and Mixtec peoples expanded their territories displacing speakers of the Tequistlatecan languages slightly. During this time the Purépecha (Tarascans) consolidated their state based at Tzintzuntzan. They were resistant to other states of Mesoamerica and had little contact with the rest of Mesoamerica. Probably as a result of their isolationist policy the Purépecha language is the only language of Mesoamerica to not show any of the traits associated with the Mesoamerican Linguistic Area. In Guerrero the Tlapanecs of Yopitzinco speaking the Oto-Manguean Tlapanec language remained independent of the Aztec empire as did some of the Oaxacan cultures such as the Mixtecs of Tututepec and the Zapotec of Zaachila. In the late postclassic around 1400 CE Zapotecs of Zaachila moved into the Isthmus of Tehuantepec creating a wedge of Zapotec speaking settlements between the former neighbors the Mixe and the Huave who were pushed into their current territories on the edges of the Isthmus.