Make sure to answer all parts of the question
For the first and second questions make sure to answer both as both must happen for there to be a Civil War.
For the third and fourth questions you can take a stance as to the roles of Slavery and States’ Rights, but Brands considered if it would be useful to examine the role of each/how both worked to cause issues.
The final question carries a lot of importance and should be a large focus of your essay.