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Xomiltepec, and then to Teotihuacan, a site remarkable for extensive pre-Aztec ruins, where they elected rulers, and then to Coatepec, where the Otomi branched off. Later the tribes who still remained associated foregathered at Chicomoztoc, another locality mentioned in nearly all the myths, where they established cave-temples. Hence the Toltec departed to Tulanzinco, and subsequently to Tulan; after they had separated, the Tarascans also split off, finding their way to Michoacan. Later still the Nahua, including the Tepanec (founders of Azcapotzalco), the Acolhua (of Tezcoco), and the eventual populations of Chalco, Uexotzinco and Tlaxcala respectively. The Aztec alone remained wandering in the northern steppes until they too eventually reached the valley of Mexico. It is hardly worth while entering into the details of Toltec history as recorded subsequent to their settlement; the "Annals of Quauhtitlan," a native tradition of considerable age and value, gives a list of five kings; Torquemada and Ixtlilxochitl furnish an entirely different list, the latter mentioning one king in addition to those quoted by Torquemada. All that need be said is that the Toltec were ruled by priest-kings, representatives of their god Quetzalcoatl, who, according to one legend, was their first ruler, and that the downfall of their power was heralded by the separation of the temporal and religious authority. The cause of that downfall seems to have been the gradual incursion of later Nahua immigrants; signs of degeneration are not wanting in the legends connected with the later reigns, in particular the introduction of human sacrifice. At the fall of the kingdom, a great emigration took place in the direction of the east, to Tabasco and beyond, and, so the story tells, via Tehuacan and Teotitlan to Soconusco. Many of the Toltec however remained behind, especially in Colhuacan, Cholula and Uexotzinco. The arrival of the Tlaxcalans, which probably occurred about this time,