The supreme court's decision in the plessy v. ferguson case had a long-lasting effect on race relations in america. which statement best describes its impact?
a. all freed slaves in the south were given 40 acres of land and a mule.
b. the court declared that the 14th amendment was unconstitutional.
c. blacks were permitted to share railway cars with whites in the south.
d. segregation in the south was determined to be legal.