The loss of farms, crops, and enslaved labor as a result of the Civil War meant that the

A. Northern economy almost completely shut down.

B. Southern economy almost completely shut down.

C. Entire nation's economy had to be rebuilt.

D. Entire nation had to suffer without food

The loss of farms, crops and enslaved labor as a result of the civil war meant that the entire nation's economy had to be rebuilt - c.

While not all parts of the nation were equally hurt here, it was the case that the civil war brought upon very drastic changes in the way how the country progressed since then.