Answer:
Racial caste OR PERSONAL PROPERTY
Explanation:
The Racial caste as a name started with the colonies of the British who sees all slaves as all the kind of people that came out of Africa.
Some slaves were even categorize as unable to be a christian in Virginia because they see it as being a form of granting slaves freedom.
Slaves are even referred to as chattel slavery which refers to slaves as personal property of the slave master because the slave has been bought as a commodity.