(1200-1533) they became a powerful South American empire.
* The chief ruler was called the Inca and was considered a deity descended from the sun.Ā
* The Incaās wife was believed to be connected to the __**moon**__.
* The Inca understood that different crops grew at different altitudes, and used metal tools, fertilizers, irrigation, dams, and canals.Ā Ā
* Expansion was made possible by agricultural advances that __**increased food supply**__.Ā Ā