Which was an effect of the Supreme Court case Plessy v. Ferguson? (1 point)ResponsesIt 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 NorthIt weakened and outlawed Jim Crow laws in the NorthIt reaffirmed and strengthened Jim Crow laws in the South.