which is the best description of the effect that the ratification of the united states constitution had on america ? a) it ended the dispute between northern and southern states over the issue of slavery. b) it forced foreign nations reduce tariffs and trade more freely with the new nation. c) it helped bring about the surrender of the british troops at yorktown and ended the american revolution. d) it unified the 13 states into a stronger nation than what had existed under the articles of confederation.