Don't listen to this doof. the answer is interpersonal racism.
Explanation:
One is a grandfather, one is his son, and one is his grandson
Answer:
The Southern part of the United States relied heavily on agriculture. This required manual labor. For them it was a lot cheaper to use slaves to keep their economy strong.
However, the North wasn't as focused on agriculture. Instead, they relied on industrialsm. Industrial jobs like factory workers, required a necessary ammount of knowledge. Slaves were deprived of this necessary knowledge, therefore they were not capable of performing these jobs.
