Commerce and slave trade compromise ia u1 voc 5s madison's plan for a bicameral legislature, with the executive and judiciary chosen by legislature agreement that each slave counted as three-fifths of a person in determining representation in the house of representatives and for taxation resolved differences between northern and southern states; congress could not tax exports nor ban the slave trade for 20 years. settled disputes between the states over the structure of the legislative branch power is divided between the states and the federal government