At the turn of the 21st century, more than half the country’s more than 36 million African Americans lived in the South; 10 Southern states had black populations exceeding 1 million. African Americans were also concentrated in the largest cities, with more than 2 million living in New York City and more than 1 million in Chicago. Detroit, Philadelphia, and Houston each had a black population between 500,000 and 1 million.

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

spread of christianity

the northwest ordinance of 1787 guaranteed basic rights for settlers and banned slavery there.