The map shows that part of the US that existed following the passage of the Ku Klux Klan Act 1871.
What was the Ku Klux Klan Act 1871
The Ku Klux Klan Act 1871 was done to enforce the 14th amendment to the United States by the congress.
This act was done in order to eliminate the violence that was done on the people of the black race in the United States.
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