Hey I believe the answer is A
Answer:
the frontier had meant that every American generation returned "to primitive conditions on a continually advancing frontier line." Along this frontier -- which he also described as "the meeting point between savagery and civilization"
Explanation:
Hope I helped! if not im sorry.
C. water vapor cannot condense because air temperatures are too high.
this is the correct answer
Answer:
The theory explained that the Constitution was a contract between independent states. The South felt the Union had broken the contract and had the right to secede.
Explanation:
