Here's why:
* Chattel refers to movable property, like an animal or an object.
* Chattel slavery therefore means treating a human being as an object that can be bought, sold, inherited, and even traded like any other form of property.
This is in contrast to other forms of slavery, like debt bondage or indentured servitude, where individuals are not considered outright property but are forced to work off a debt or fulfill a contract.