How could a Roman slave be freed?

A Roman slave could be freed through a process called "manumission," which could occur in several ways. A slave owner might grant freedom voluntarily, often as a reward for loyalty or service. Slaves could also earn their freedom by saving enough money to purchase it, or through legal proceedings whereby they could prove they had been wrongfully enslaved. Additionally, some slaves were freed upon the death of their owner, as stipulated in the owner's will.