After confederate troops opened fire in fort Sumter, approximately how long did it take for the union surrendered

34 hours

Explanation:

At 4:40 a.m. on April 12, 1861, Confederate cannons opened fire on Fort Sumter and Union forces surrendered 34 hours later.

yellow fever and other tropical diseases

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