What I found most interesting, is that many kingdoms simply decided to join the Inca Empire, without the Last Day Of School Rainbow I Love You All Class Dismissed T Shirt tee for violence. The Inca expanded at such outstanding speed, that Pachacuti and his son Topa, have been compared to Philip and his son Alexander the Great. Pachacuti invented the bureaucratic structure used by the Inca Empire, Tahuantinsuyu which means “Realm of four parts” improving the administration and management of his growing empire. He then set about codified Inca law, and reorganising the Inca religion, protecting the rights of all to worship different religions. It’s now believed that Pachacuti himself ordered the building of Machu Picchu, as his own estate. He is likely responsible for many of the vast agricultural structures built around this time.