Answer: D. Federal boarding schools were created to americanize Native American children.
The correct answer would be D. An assimilation policy is a mandate from the government with the purpose of forcing a cultural group to adopt mainstream American culture. Options A and B do not describe policies, as the government did not order these situations. Instead, they are an unintended result of the European dominance and abuse of Native Americans. On the other hand, option C does not describe an event that has assimilation as its goal. However, federal boarding schools were an assimilation policy endured by Native Americans.