The result of the Korean war was a stalemate - so noone won. That's why options A, B, and C are not correct.
D is correct- the containment of the spread of Communism was successful.
<span />
D the same tasks for many hours
<span>Assuming that this is referring to the same list of options that was posted before with this question, <span>the correct response would be the "Great Migration," since this was a mass exodus of African Americans from the rural south to the more industrialized north, where there were many more job opportunities in cities. </span></span>