<span>B. try an activity you're interested in learning.
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The American attitude shifted in favor of rights for Native Americans. This is based on "Polls showed that Americans believed in rights for Native Americans". Why it's not B is because it wasn't the polling that contributed to the act, but what the polls showed which is C.
The idea that helped create an independent America from the Great Awakening is the natural rights which come from God. It contributed to the independent spirit among the colonists of America because it was able to reduce the hierarchical power of the religious sects. It made people think more about themselves than the issues in the religion.