16. It can be inferred from the passage that, in comparison with northern, cities, most southern cities were (A) imagined (B) discovered (C) documented (D)planned

20. What aspect of farming in the United States in the nineteenth century does the Passage mainly discuss? (A) How labor-saving machinery increased crop Production (B) Why southern farms were not as successful as Successful as northern farms (C) Farming practices before the Civil War (D) The increase in the number of people farming