Which belief was lincoln's stated reason based on for fighting until the south surrendered?
a. slavery was immoral and should be abolished.
b. the country could not continue to exist as a nation if a state could secede anytime it wished.
c. the north could not survive without the economic support of the south.

Answer B.No Country could continue to exist as a nation if a state could secede anytime it washes

The answer is

     B. The country could not continue to exist as a nation if a state could secede anytime it wished.

He said this because he believed that the country could not be unified if people could quit and rejoin whenever they felt like it just because they decided they wanted to avoid a problem

d. she conquered the black sea coast and parts of poland.

a agree i agree becuase it is very importnat for example it can tlel you about your past for exmaple   the first culture was the semerians which people are sitll tryignt o uncover there secrets the wall is just anohter treasure that has thousnads of secrets in it to be uncovered