Answer:
Andrew Jackson, generally in favor of states' rights, saw nullification as a threat to the Union. In his view, the federal government derived its power from the people, not from the states, and the federal laws had greater authority than those of the individual states.
Explanation:
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This is important, because this lead to more trade routs with other countries, and this strengthen the empire as a whole. These roads also lead to more connections to cities, and lead to more homes, and overall improved their society as a whole.
Either C or D. I would assume D because the southern states were made military districts.