Which of the following is an example of a claim that a historian might take about the American civil war

An example of a claim that a historian might make about the American civil war is the American civil war was caused not by slavery but by economic factors. The Union confronted secessionists in eleven Southern states gathered together as the Confederate States of America.

Explanation:

the answer is d. give brainliest if right.

ps is this 7th grade civics?

a) the colonists began to see themselves as different from people in britain.