Which book, uncle tom's cabin or the impending crisis of the south was more important? explain?

The book Uncle Tom's Cabin was more important because it had a much more dramatic effect upon public opinion. The author Harriet Beecher Stowe went for the emotions and stirred up the citizens in great numbers. Hinton Helper's book was significant but more on the intellectual and political side. 

The answer is b.african american abolitionists emphasized legal and social equality