He called them Indians because he thought he had landed in India.
Correct Answer: B. Maine
The US Congress passed a law that admitted Missouri to the Union as a slave state AND MAINE AS A FREE STATE.
Increased number of women working in industries
This implied the sudden weakening of the traditional family hence less children which resulted to decreased population in the northern cities whose lifeline was industries and pay job as source of income. more and more women bore less children.
It nearly doubled the size of the United States & it made it clear to other countries that America would try to salve problems/differences peacefully.