The Indian Appropriations Act of 1871 changed how the US government treated American Indians. Under this policy, American Indians were treated as individuals. Option 2 is correct.
In accordance with the Indian Appropriation Act of March 3, 1871, any group of Indians in the United States was no longer recognized as an independent nation by the federal government. What is more, Congress claimed that all Indians should be treated as individuals and legally designated "wards" of the federal government.