Why were the rights and privileges of the freedmen still threaten even after civil war

The rights and the privileges of freedmen were still threatened after the civil war because laws were still made to regulate their activities. The black codes law were enacted which controlled the way a freed man can live; strict restrictions were placed on them, they can not vote, serve on jury, travel freely or engage in occupation of their choice.

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a) which ethnic groups live in this community?

i just took test