What factors caused the deep divisions between the North and South during the 1850s?

The deep divisions between the North and South during the 1850s were primarily driven by economic differences, with the North industrializing and favoring free labor, while the South remained agrarian and reliant on slave labor for its economy. Additionally, differing social attitudes towards slavery, highlighted by events like the publication of Uncle Tom's Cabin and the violent conflicts in Kansas, fueled tensions. Political disputes over the expansion of slavery into new territories, exemplified by the Compromise of 1850 and the Kansas-Nebraska Act, further exacerbated these divisions. Ultimately, the struggle for power between pro-slavery and anti-slavery factions intensified, leading to a breakdown in national unity.