Answer:
Answer is black codes.
Explanation:
There is a law which was enacted in 1865 and 1866 which was targeted on the civil rights of the black or African slaves.
This law, which was designed or enacted to prevent the blacks that were slaves from excising their rights, thereby limiting their freedom.
Third party candidates don't have the funding or popularity of our main two political parties, so they are unable to campaign effectively. Often, voters end up choosing the Republican or Democrat who is closest to the third party candidate if they really wanted to support them, and the third party's supporters give up.