The interstate commerce act of 1887 resulted from the efforts of the granger movement in order to improve a) working environments for factory workers. b) living conditions for farmers in the south. c) membership and participation in industrial labor unions. d) economic conditions of farmers by regulating railroad rates

b). (sounds as the best answer)

powers  are  denied  to the  national governmentin three distinct ways: some  powers, such as the  power  to levy duties on exports or prohibit the freedom of religion, speech, press, or assembly, are expressly  denied  to the  national government  in the  constitution.

answer; (c) slaves brought to the americans from africa;