Land bridge theory many scholars think that 15,000 years ago during an ice age hunters crusty land bridge between Siberia and Alaska in search of mammoths and other animals coastal route theory today some scholars think that 40,000 years ago Hunters and gathers think others arrive on Smallboat eventually working on their way down the West Coast of America
Socially useful part of society.
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Explanation:
The self-determination act promotes Indian self-government which allows them to rule over of the delivery services. This acknowledges the Indians to have independence and discipline in their affairs. The demand of the Native American activists is for the tribes to take over the resources and education.