Answer:
E) North had a much more substantial economy.
Step-by-step explanation:
The economy of southern states was basically tied to the production and exporting of cotton. Cotton was America's largest export, but it was sold only as raw materials, it wasn't processed.
While northern states had a much broader railroad system, a healthier financial system (87% of all financial institutions), manufacturing facilities and large urban centers. Even the factories that processed cotton from the south were located at northern states.