The Inca civilization arose around 1438 C.E. The Inca, once called Tawantinsuyu, built many large cities and ruled over millions of people. Because they were located along the Pacific Coast there were many different climates, from rainforests to the driest of deserts.
The Inca grew grain, vegetables, fruits, over 20 kinds of corn, and 240 kinds of potatoes in the valleys of the Andes Mountains. To stop the crops from sliding down hill they built terraces, or flat