Which was an effect of the Supreme Court case Plessy v. Ferguson?

Question

(1 point)
Responses
It reduced the frequency of racial violence in the South.
It reduced the frequency of racial violence in the South.
It caused increased migrations of people from the North.
It caused increased migrations of people from the North.
It weakened and outlawed Jim Crow laws in the North
It weakened and outlawed Jim Crow laws in the North
It reaffirmed and strengthened Jim Crow laws in the South.

Answer 1

It reaffirmed and strengthened Jim Crow laws in the South.