These societies have left many testimonies to their greatness despite the long period of devastation: religious monuments built with more skill than the Egyptian pyramids, technically efficient constructions for the battle against nature, art works showing indomitable talent. In the Lima museum there are hundreds of skulls which have undergone trepanning and the insertion of gold and silver plates by Inca surgeons. The Mayas were great astronomers, measuring time and space with astonishing precision, and discovered the value of the figure zero before any other people in history. The Aztecs’
  
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Lasting greatness of these ancient societies deemed "barbaric" or subhuman according to Christian Spaniards





