Your answer should be A. Self- concept is a more specific self-judgment of personal abilities.
North: They had troops, guns, equipment, and provisions inside, and they owned it, and so they wanted to keep it.
South: It was located in the South, and they thought it was rightfully theirs, and that is why they wanted it
It didn't really have any strategic importance, however, it had political importance
hope this helps
D this answer must 20 letterrs to answer