How did incas keep records ?How did this system work?​

The Incas had developed a method of recording numerical information which did not require writing. It involved knots in strings called quipu. The quipu consists of strings that were knotted to represent numbers. A number was represented by knots in the string, using a positional base 10 representation.

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