how would the conditions of slavery in america contribute to a divided country and ultimately a civil war

I’m not sure if this helps but, after the Kansas Nebraska Act passed, a stricter slave law was placed which resulted in the North becoming angrier. There was also the book by Harriet Beecher Stowe, it was Uncle Tom’s Cabin which was a book wrote to expose the horrors or truths of slavery. This angered the South and led to many Northerners to becoming abolitionists. I’m not sure if this helps.

False but idk if im right