As a result of the actions of enslaved people during the Civil War, Northern factory workers lost their jobs. Southern cotton farms thrived. Southern farms could not produce enough food. Northern factories gained more workers.

Option: Southern farms could not produce enough food.

Explanation:

After the Civil war in America, the South was in a situation of destruction with farms and plantations burned down. Many of the plantation's slaves during the Civil War, ran away and some joined the Union army, which resulted in lack of the slaves in the South. After the war, when slavery became illegal, the planters in the South could not produce crops and other food items enough to gain profit as they did before the war.