None to speak of. There were just too few of them spread over too much territory. The estimate was about 12000 persons spread over what are now several states.

This is generally true of those civilizations that did not build large cities or have powerful tools.

The only suspected major environmental effects of folks such as these was on land, where they are suspected as causes of the extinction of large mammals and of changing the vegetation of the plains area by large scale fires.
Source(s):
http://en.wikipedia.org/wiki/Wampanoag


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