I think the answer to this one is A.
Well it's in your question it was the North of America, the people who didn't like slaves and thought the south was wrong. Everything term you used is considered for the North of America during the American Civil War.
Answer: D
Explanation:
Brown v Board of Education was a landmark case generally viewed as the end of segregation in schools
James, the brother of Jesus, was described as a leader of the early church.
Nearly 90% of Canada's population lives within 100 miles of the border of the United States. The correct option among all the options that are given in the question is the last option or option "D. The main reason for such population density within a specific region is that the central and north of Canada are mainly desert and Tundra.