I don’t understand this problem please help me

It's A

Explanation:

let's use the process of elimination

B isn't right because the southern states enforced racial segregation which B says the opposite

C isnt right because Jim crow isn't a person

D isn't right because marriage has nothing to do with the Jim Crow laws

So A makes the most sense since it is era that were defined by those laws especially in the south.

( I hope this helps answer your question!)

:)

this is a good question! i'll do some research and come back when i have the answer!