He wanted to withdraw federal troops from the south as quickly as possible
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The Federalist Society for Law and Public Policy Studies, most frequently called the Federalist Society, is an organization of conservatives and libertarians that advocates for a textualist and originalist interpretation of the United States Constitution.
Answer:
To create new trading market
All of these are defensible. Of course debt rises in war, and decreasing taxes will benefit an economy where taxes are no longer needed (post-scarcity.) Political and geographical boundaries are outmoded and a world without them is not only possible but existed for much of early human civilization. As for the government, a government would run more efficiently when everyone is in basic agreement with what to do and how.
I would question your teacher on this. Anyone can defend these perspectives...