Answer:
They were dependent on slavery and cash crops.
Step-by-step explanation:
The industrial revolution started in the northern states way before it make its way to the southern states.
On the years leading up to the civil war, the northern states already used technology as a backbone for their productions while the southern states still relied on slave labors to increase the production in their plantation.
This contributed to the difference on how they view slavery and eventually led to their clash during the United States civil war.