The answer to the question asked above is that Father Mora uses slaves in a secret way so that no one knows about it. They also work in a less than desired manner. They are treated as poor slaves.
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Answer:
1. After Reconstruction, many southern states enacted a poll tax, which was used to Ensure poor African Americans could not afford to vote.
2.Literacy tests, requiring voters to pass in order to vote. Because African Americans were exploited economically and denied an education, these restrictions disqualified many of them as voters.
Basically it's impossible to add to the question you have to prove