We have seen the Olmec tribes established for several centuries on the eastern plateaux, or in the territory now constituting the states of Puebla and Tlascala. Cholula was the Olmec capital, a flourishing city celebrated particularly for its lofty pyramid crowned with a magnificent temple built in honor of Quetzalcoatl. Teotihuacan within the valley of Anáhuac had long been as it long continued to be the religious centre of all the Nahua nations. Here kings and priests were elected, ordained, and buried. Hither flocked pilgrims from every direction to consult the oracles, to worship in the temples of the sun and moon, and to place sacrificial offerings on the altars of their deities. The sacred city was ruled by the long-haired priests of the Sun, famous for their austerity and for their wisdom. Through the hands of these priests, as the Spanish writers tell us, yearly offerings were made of the first fruits of all their fields; and each year at harvest-time a solemn festival was celebrated, not unattended by human sacrifice. It is true that the Spanish authorities in their descriptions of Teotihuacan and the ceremonies there performed, refer for the most part to the Toltec rather than the pre-Toltec period; but it has been seen in the preceding chapter that this city rose to its position as the religious centre of the Nahuas in Mexico long before the appearance of the Toltecs, and there is no evidence of any essential change in its priesthood, or the nature of its theocratic rule.[IV-1] No national name is applied in tradition to the people that dwelt in Teotihuacan at this period, although the Totonacs claim to have built the pyramids before they were driven eastward by Chichimec tribes. Tabasco, Vera Cruz, and Tamaulipas were occupied by Xicalancas, Totonacs, and Huastecs, respecting whom little more than their names is known. Southward in Oajaca were already settled the Miztecs and Zapotecs. The Otomís, a very numerous people, whose primitive history is altogether unknown, occupied a large part of the valley of Mexico, and the surrounding mountains, particularly toward the north and north-west. There were doubtless many other tribes in Mexico when the later Nahua nations came, particularly in the north and west, which tribes were driven out, at least from the most desirable locations, subjected, or converted and partially civilized by the new-comers; but such tribes have left no traces in history.[IV-2]