A shortage of crops/food would have killed off the soldiers mostly, devastating the southern states. I hope this helped!
Thanks!
~Steve
The territory contained land that forms Arkansas, Missouri, Iowa, Oklahoma, Kansas, and Nebraska; the portion of Minnesota west of the Mississippi River; a large portion of North Dakota; a large portion of South Dakota; the northeastern section of New Mexico; the northern portion of Texas; the area of Montana, Wyoming
I believe its c. hope this helps...