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.
<span>During the late 19th and early 20th centuries, united states foreign policy was marked by intervention in affairs of Latin America.</span>
A polis controlled itself either by a king democracy
A colony did not it was ruled by another city
