Capital

People had been living in the Valley of Mexico for many centuries before the arrival of the Aztecs in the thirteenth century and the conquering Spaniards soon after that. The basin had no natural outlet and several lakes formed in the valley, attracting inhabitants to their shores. Not far from present-day Mexico City, more than 100,000 people lived in Teotihuacan, the "Place of the Gods," before it was inexplicably abandoned around A.D. 750. Many other groups moved in and out of the valley. Several lakeside communities, some with 10,000 to 15,000 residents, flourished in the Valley of Mexico during pre-Columbian times.According to oral history, the Aztecs were a nomadic tribe. Unskilled and barbaric, they were not welcomed by the inhabitants of the Valley of Mexico when they arrived there in the thirteenth century. They were forced to move from one place to another along the western shore of salty Lake Texcoco, and they ate whatever they could find, including mosquito larva, snakes, and other vermin. In time, the Aztecs settled on some swampy islands on the western shores of the lake. According to legend, the Aztec war go led them to this place. They knew they were home after seeing an eagle perched on a cactus devouring a serpent (today, this national emblem is on the Mexican flag). From here, the Aztec city of Tenochtitlán spread over the marshes, swamps, and islands ​