there were almost 12 million people all young men were required to serve in the icon army their was pachacuti
Inca to empire as far as ecuader central chile and the edge of the amazan basin
They ate potato, corn, beans, squash, avocados, tomatoes, and maniac, they grow crops
They used advanced farming techniques such as canals and irrigates their crops in Peru.
The inca used a dry masonry method to construct building without mortar using stones to it fits so perfectly together.