What steps did world powers take after World War
avoid future wars? Why?

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

i think the answer is a and i hope this ; ))

to act quickly in times of danger to the united states

because you have to act quickly if you want to live/survive.