Answer:
They created the Jim Crow Laws, which made African Americans unable to do certain things such as vote and hold office, and the Ku Klux Klan (KKK) threatened African Americans in many ways, even going as far as to murder them.
Explanation:
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One source of income for the middle colonies was fertile soil and wheat.
Laissez-faire, in the capitalist world this is an important doctrine that states that businesses should have the right to as they please with no government intervention. The doctrine promotes capitalism and business overall, in hopes to have a free economy.