immigration legends are not wanting. For instance, one story relates that the first lords entered the country from the north, after the Mexican migration, and settled between Achiutla and Tilantongo. The relationship which exists between the Mixtec and Zapotec languages suggests a strong common element, but it seems probable that the former people had received an element of some immigrant nationality, possibly akin to the Toltec or Chichimec. This element was not strong enough to influence the local dialects, but gave the Mixtec that superiority in arms which enabled them to encroach upon the Zapotec district. East of the Zapotec were the uncultured Mixe and Zoque, from whom the Zapotec in their turn had won territory, including Tehuantepec. To return to the conquests of Axayacatl, this king completed the reduction of the Toluca valley, and reconquered the region of Cotaxtla which had revolted, so that his successor Tizoc, who seems also to have sent an expedition to the Mixtec country, was able to lay claim to an empire extending over the valleys of Toluca and the Rio de las Balsas, and the highlands of Mixteca, Huaxteca, Orizaba, Cotaxtla and Teotitlan. Axayacatl died in 1469, and Tizoc in 1482, and Auitzotl became the Aztec ruler. He continued the strenuous foreign policy of his predecessors, and proved a vigorous conqueror, though he was passionate and often cruel in administration. His armies conquered many cities in the Zapotec country, including Mitla (1494), Teozapotlan (1495) and Tehuantepec, and after seizing Tonala, the key to the country further south and east, pursued their victorious course through Soconusco, via Mapaxtepec, Escuintla and Huiztla, as far as Huehuetlan. Other expeditions penetrated Chiapas, and even subdued certain cities in Guatemala. Probably however there was nothing like an effective occupation of the country beyond the city of Oaxaca, where
