Plz for after the end of the american civil war, many southern states passed "black codes" which were primarily intended to a) keep former slaves out of public schools. b) ensure that former slaves were granted all of the rights of american citizens. c) define who would and who would not be considered "black". d) place political, economic, and social limits on black people in the south—control relations between white southerners and newly freed slaves.

D) place political, economic, and social limits on Black people in the South—control relations between White Southerners and newly freed slaves.

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its main object was the establishment of "settlement houses" in poor urban areas, in which volunteer middle-class "settlement workers" would live, hoping to share knowledge and culture with, and alleviate the poverty of, their low-income neighbors.