The correct answer is they promoted segregation and fewer rights for blacks.
After the end of the Civil War, Southern government continually tried to restrict the rights of African-Americans even though laws like the 13th, 14th, and 15th amendments were added to the Constitution to protect this group of people. Southern governments found loopholes and were still able to restrict the rights of these people through Jim Crow laws, poll taxes, and literacy tests.
Jim Crow laws promoted segregation, as this law allowed for the legal development of segregated public spaces (like parks, schools) as well as private businesses (such as theaters).
Poll taxes were a certain amount of money a person had to pay in order to vote, which hurt African-Americans
Literacy tests were difficult exams that individuals had to pass in order to vote.