From 1850 to 1865, the U.S. changed radically in some ways. In other ways it remained stubbornly the same. This question tests your understanding of the changes and continuities in this crucial 15-year period. For this question, please infer intelligently on the possible points-of-view of four fictional Americans at two different points in time – 1850 and 1865. The four fictional persons are:________.