You dont need a separate law for slavery to exist. If 1. freedom of contract is unrestricted and 2. parents are allowed to make decisions for their children and

You dont need a separate law for slavery to exist. If 1. freedom of contract is unrestricted and 2. parents are allowed to make decisions for their children and enter contracts in their name, then: * Someone can sell themselves into, or otherwise enter, slavery. * When that slave has a child, the owner can order them to enter a contract in the childs name that makes the child a slave. Serfdom started in a similar manner, at least in some places: A free peasant agreed to become a serf in exchange for protection, then their descendants inherited that status.