Respuesta :
Answer:
D, Southern agriculture was too important to the U.S. economy to lose slave labor.
Explanation:
The South back then heavily supported the US economy with their cash crops. Without slaves doing this free labor, the economy would almost undoubtely decline significantly.
Hope this helps!
This is a tough one, so take my answer with a grain of salt.
It's definitely not A or B, so I would say C.
