Answer:
Probably B, don't you think?
Explanation:
The Jim Crow Laws served to segregate the colored from the whites not poor and rich. Race played the prime role here.
I'm not sure if I remember correctly, but I believe it's C.) Passing laws that apply to actions taken before the law was passed.
They were all afraid. They had more and more weapons but were more and more afraid because they knew that if any of them attacked, the others would retaliate and that monstrosities would be committed. They had many nukes but nobody used them out of fear of what the other one would do since they wouldn't be able to defeat the opponent before he launched his nukes.