What did the civil rights act of 1866 law overturned and contradict?

The Civil Rights Act of 1866 overturned and contradicted the Black Codes, which were laws passed by southern states after the Civil War to limit the civil rights of African Americans. The Black Codes established racial segregation, restricted voting rights, severely limited mobility and residence of African Americans, and placed them into a form of semi-slavery, forcing them to do labor and service for little or no wages. The Civil Rights Act, on the other hand, granted African Americans full citizenship and declared that they, like all person born in the United States, had the same rights as white citizens to make and enforce contracts, to sue and be sued, to give evidence, and to inherit, purchase and convey real and personal property.