Chapter One reading Exercise: What regional differences in native societies and economies existed on the North American continent before European arrival? One of the major regional differences in the North American native societies before the arrival of Europeans is the hundred or so different languages spoken, political systems and set of religious beliefs throughout the numerous tribes. The location of the tribes affected the life their style as well. One example of are the Mound Builders as they are called in the book. This Mississippi River Valley tribe constructed a large community centered on a series of giant semicircular mounds on a bluff overlooking the Mississippi River. They native Indians also set-up trade routes throughout the