Who did the Inca civilization trade with?

them sevles while it is true that they did trade amongst themselves, it is apperant that they also traded with the nearby tribes, which they quickly concured for the most part, by marrying themselves into the tribes or by force. both were equally effective. however, one must also take into consideration of WHAT they traded. since they had no form of currency, they often traded moon tears (silver) sunsweat (gold) or cloth, but also had an array of minerals collected from the volcanic highlands nearby and crops grown via terrasing ( I think that was it) which involved flattening mountainous land into a Plateu. However, most of the food grown was used to feed the people of the inca, or was a tax to the king. I'm looking up more information as of now, and will post more as I get it. contact (megagamer_64@Yahoo.com) if you have any additional questions.