Why did bands of Cheyenne, arapaho, Kiowa, and Comanche leave the reservation to raid nearby white settlements in the 1870s?

They were dissatisfied with poor reservation conditions.

Explanation:

The Native Americans initially agreed to be reallocated to the nearby reservations in exchange of giving up their ancestral lands to the government.

But At the time, the government did not make a good effort to provide the Native Americans with proper standard of living. They have to face problems such as insufficient food, small spaces, and unmaintained environment. So, they decided to raid nearby white settlement as a response.

affirmative action refers to the policies that take gender, race, or ethnicity into account in order to promote equal opportunity.

employers subject to title vii are prohibited from taking race or sex into account in any employment decisions. aa is a penalty for having any job group substantially statistically "underutilized" in any race or either sex. the employer must take steps to eliminate the underutilization, then stop, ending its aa efforts