Answer:
The answer is actually c. Many natural barriers- such as mountains- led to less warfare in the region.
They were signing a petition to establish the 'Columbia Territory'.
So that they can use them as primary sources to find out the most accurate facts
Douglas argued that white people should decide for themselves whether or not to allow it, while Lincoln claimed slavery was immoral and should eventually be abolished.
Answer:
the steam ingion let martials quickly travel throw-out the unit states by train. it was much cheaper and less phycal labor.
Explanation: