By the early 1800s, most northern states:

A-supported the immediate abolition of slavery

B-passed laws to slowly end slavery

C-accepted slavery within their borders

D-wanted to separate from southern states because of slavery

D

Explanation:

The North was a more industrial type area with many factories and company's. This means that htey did not have any demand for slaves because they did not forego any argricultural work. However they didn't think much of slavery until they realized how harsh the conditions were. Once they saw that they didn't want to be apart of the south which lead to the Civil War