[Pelham]

“Notably, although the North mostly wanted the slaves freed, they did not want them moving to the North in large numbers when freed.”

Many northern states had enacted Black Codes designed to keep blacks from living there. Lincoln’s own Illinois had them. This site has some fascinating history about slavery in the North:

http://slavenorth.com/exclusion.htm

[Rockingham]

I know the subject well. The late 19th century South adopted and expanded the North's "Black codes" as the foundation for Jim Crow. In that respect, the post-Civil War South copied the North's bad ideas about how to address troublesome issues of race and poverty notwithstanding "the blessings of Liberty." Notably, Republican Justice John Marshall Harlan -- born of a slave holding family in Kentucky -- wrote a magnificent dissent in Plessy that argued for racial neutrality by government. Sadly, his views have not yet fully prevailed, even in the Supreme Court.