Which book changed the way Northerners saw the institution of slavery?

Frederick Douglass autobiography, narrative of the life of Frederick Douglass and American slave
Harriet Tubman’s autobiography, the life and story
Stephen Crane red badge of courage
Harriet Beecher uncle Tom’s cabin

Harriet Beecher Stowe's "Uncle Tom's Cabin" is the book that changed the way Northerners saw the institution of slavery. This novel was influential in portraying the harsh realities of slavery and humanizing enslaved individuals, leading many Northerners to become more sympathetic to the abolitionist cause.