1.The incas relied on trade with andean cultures for non-agricultural goods
2.The Inca encouraged the worship of their sun god Inti. They considered the Incan King to be the son of the sun. As a result, the Incan government was unified under that one king considered to be a deity in himself due to his relationship with Inti. The center of the government was this king, and there were four provincial governments pertaining to the four regions of the empire.
I hope that helps, I'm sorry if it didn't