Only Rhode Island & New Hampshire saw actual declines in the numbers of total African Americans -- from a combined total of 5,229 in the 1790 census (of which 1,115 were slaves) to 4,446 in the 1860 census, no slaves.
Throughout the Northeast & Mid-Atlantic states, total numbers of African Americans increased from 67,000 in 1790 (including 40,000 slaves) to 156,000 in 1860 (including 64 slaves).
During that same period the numbers of Southern slaves grew from 654,000 to 3,950,000 while Southern freed-blacks grew from 32,000 to 251,000.
I've seen no numbers for how many Northern slaves were "sold down the river".
FLT-bird: "The “Black Codes” they passed and the refusal of Whites to work alongside Blacks in several instances made it all but impossible for Blacks to earn a living - thus driving them out as was always intended."
Except that most freed-blacks did earn a living and were not driven out by anything except possibly the cold weather.
And Northern states with the allegedly strongest Black Codes -- i.e., Illinois -- also showed the largest percentage increases in their freed-black populations.
In Illinois' case, freed-blacks grew from 457 in the 1820 census to 7,628 in 1860.
So the actual results do not support your blanket condemnations of Northerners.
FLT-bird: "No, not everything about the War for Southern Independence was about slavery.
The most important considerations for both sides were not about slavery."
Complete rubbish.
FLT-bird: "Oh, and this thread was not about that time period.
So why are you trying to hijack the thread?"
To my knowledge, no Unionist-Republican has ever "hijacked" a Civil war related thread.
We have only ever responded to Democrat Lost Cause lies & nonsense.
Do you wish to shut us up forever?
It's easy -- all you have to do is stop posting Democrat lies and hatred for the United States of America.