"Most Native Americans did not neatly distinguish between the natural and the supernatural. Spiritual power permeated their world and was both tangible and accessible"

This shows how much more open Natives were to the super Naturaul unlike the Europeans who were more than likely christians.

my first question: is what do they mean exactly by "kinship"?

My second question is: what does the reading mean by Chiefdoms?

"Food surpluses enabled significant population growth, and the Pacific Northwest became one of the most densely populated regions of North America"

This is significant because it shows how succesful the natives were before the Europeans showed up and spread native European diseases to Natives.