Well fossil fuels are such a largely used resource in the economy it is hard to transition from it since its so depended on for many things.
Answer:
A. Increased tensions between the North and South
Explanation:
The North viewed Brown's raid on Harpers Ferry to be the actions for their cause, and wrote them as heroes and martyrs. On the other hand, the South believed that Brown's raid was detrimental to their life styles (being heavily dependent on slaves), and that his actions may lead to unintended consequences. This led them to double-down on security.
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True, the Confederates created their own country be a u we they thought the union didn't care about them enough yo try to keep it together.
The statement "insure domestic tranquility" would remind the states to work together cooperatively because they are the governing entities that can help to prevent domestic conflict.