Answer:
Uncle Tom's Cabin, the novel, played a role in the Civil War greatly. It did so because Harriet Beecher Stowe wrote the book right before the Civil War started. She was an abolitionist, which means she was against slavery, and she wrote the book so that the North would understand how badly the South were treating their slaves, but she did actually exaggerate in some parts of the book. I believe she knew all about slaves because her parents owned slaves.
The North thought the book was interesting and got many Northerners thinking about slavery and how devastating it really was. The South took it as an attack on the South as a whole. Abe Lincoln claims that Harriet was the little girl who started this big war.