Answer:
Most Indian groups living in the Great Lakes region for the last five centuries are of the Algonkian language family. This includes such present-day Wisconsin tribes as the Menominee, Ojibwe, and Potawatomi
There were many but they were all from the Algonkian language family
Explanation:
It reached millions of people who were all exposed to the same information and ideas.
I think it was the crusades.
Population movement or changes in food source.
