The answer should be manufacturing. During the creation of the federal government, one of the key questions to arise was the centralisation and extent of power. This debate was well highlighted in the differing views of Thomas Jefferson, who believed federal government should support an agrarian (farming) economy and give more power to the states, while Alexander Hamilton stood for a federal government supporting industry and banking, as well as being the superior power.
Answer:
Britian, France, and Russia
Most of Africa is hot, so I'd say climate change
Answer:
However, if we had to point to a particular moment, we might point towards 1920, as this was the year in which more Americans were living in cities than in the countryside for the first time. One of the innovations that had the greatest influence on this shift was the introduction of the assembly line.
Explanation:
Dred Scott would remain a slave and, as a slave, was not a U.S. citizen and was considered property. The Chief Justice of this case, John Marshall, said that Scott shouldn't have even brought his case to court because he is a slave.