What two types of people were used to grow crops after the civil war?

cotton and tobacco

Explanation:

1.Former slaves

2.Planters/ farmers

Explanation:

Also here is some other information that could be helpful:

After the Civil War, sharecropping and tenant farming took the place of slavery and the plantation system in the South. Sharecropping and tenant farming were systems in which white landlords (often former plantation slaveowners) entered into contracts with impoverished farm laborers to work their lands.

elastic potential energy