Final answer:
The sectional conflict in the 19th century was driven by issues such as slavery and the role of the federal government, and it ultimately led to disunion and the Civil War.
Step-by-step explanation:
The sectional conflict in the 19th century had several key issues and ideas that promoted division between the North and the South. One major issue was slavery, with the North opposing it and the South relying on it for economic reasons. This led to debates over the expansion of slavery into new territories.
Another issue was the role of the federal government, with the North wanting a stronger central government to regulate and limit slavery, while the South wanted to maintain states' rights and protect the institution of slavery.
These conflicts were not fully resolved, and they ultimately led to disunion in the 1860s, with the secession of Southern states and the start of the Civil War.