Because the United States acquired the land from France as part of the Louisiana Purchase in 1803.
Well, the main destination would have been Canada. This is because the northern laws had made the slave owners mandate the slaves to return to their owners in the south.
I hope this helps!!!!!!!!
The primary way in which these nations built empires was through pure destruction. They would come into these small island nations and simply wipe out populations and take control of the government.
There were multiple countries but the one that banned it completely was China
