When the incas conquered a new territory, they usually

When they would arrive in a new region, they would try to make a relationship with the tribe's leader. They would offer gifts such as wool clothing, coca leaves, and mullu (shells believed to be food for the Gods).

As the Incas conquered more people, they had to devise a way to control them. They made the conquered leaders move out of their villages and move in with leaders who were loyal to the Incas government. The Inca made the children of the conquered leaders come to the Incas capital to learn about Incas ways.

Hope I helped

food chain i would say only because there is competition on getting food and survival