"For nearly 3,000 years, Mexico was the site of some of the most advanced Indian civilizations, most notably Aztec and Mayan. In many ways, these civilizations were more developed than their European contemporaries, especially in such spheres as astronomy, mathematics, and city planning. Upon seeing the Aztec capital, Tenochitlan, for the first time, Spanish explorer Bernal Diaz del Castillo was awed by its beauty and confessed that he had never seen...