Question

1. how were african american prisoners treated in confederate prison camps?

they were given only one meal a day.
they were sold back into slavery.
they were put to work.
they were usually killed.

Explanation:

Confederate forces refused to recognize African American soldiers as legitimate prisoners of war. Instead of treating them under standard prisoner protocols, they were frequently sold back into chattel slavery, as the Confederacy maintained the institution of slavery and viewed these individuals as property rather than combatants.

Answer:

They were sold back into slavery.