Answer:
Fourteenth Amendment
Explanation:
Congress drafted the Fourteenth Amendment, which prevented states from denying rights and privileges to any U.S. citizen, now defined as "all persons born or naturalized in the United States." This definition was expressly intended to overrule and nullify the Dred Scott decision.
United States train travel had changed dramatically by this time, since the transcontinental railroad had been completed, which stretched all the way from the Atlantic to the Pacific.
C. The food supply in Elizabethan England.
