The Aztec civilization dominated the valley of Mexico during the fifteen and the sixteen centuries. Their culture was seen as unethical to the Europeans that were in Aztec territory and were observing the Aztec's way of life. The Europeans where specially stunned by the Aztecs' religious ceremonies and religious sacrifices. Today we know how Aztecs lived and their ways of life because of the records that have been well preserved by their descendants and by the stories passed on from generations to generations. Their geographic surroundings are amazing to visitors that visit the ruins of Teotihuacan, the pyramids that were built to honor their gods like Quetzalcoatl, Huitzilopochtli and many others gods that ruled ancient Aztec civilization. This great civilization was not made in a few years, it took many indians to build up this empire. The Aztec empire was slowly build up by Tenochca Indians that came from the north of the Mexican valley about 1168.
According to historians the Aztecs came from the north of the valley of Mexico around the twelfth century AD. We know these indians and their civilizations as the Aztec civilization but their original Nahua name is the Mexicas. The Mexicas migrated into the south of the valley of Mexico around 1248 and were guided there by their god Huitzilopochtli. They settled deep in the valley of Mexico and were peaceful people but their practice of human sacrifices revolted other