Answer:
B. Both the Union and the Confederacy were responsible for the Civil War.
Step-by-step explanation:
The text explains how the Union was determined to save their party without having to go to war, however, the other part stills wanted to destroy the union, as well without the war. After all, the text explains how both parties didn't want to go to war but still wanted to win, and implies that they are both guilty because one party declared war and the other one accepted it and went through with it.