Answer:
- Agriculture.
- Cotton
- decline in the South
Step-by-step explanation:
Before the Civil War, the Southern states were heavily agriculture reliant with plantation farming being their main form of revenue. Plants like cotton and indigo brought huge profits to these states.
With the outbreak of war, the superior Union navy blockaded Southern ports such that they could not export the goods that gave them revenue such as cotton so they could not finance the war effort as much.
As a result of this, the Southern economy suffered and declined during the Civil War and had to be reinvigorated with the period of Reconstruction.