A slave is a slave regardless of skin color.
Originally Posted by bamscram
That is not exactly true. There a different forms of slavery. Slavery practiced in the south was chattel slavery. Because of race or birth (mixed raced people) they were owned lock, stock, and barrel you might say. Their very existence was dependent on the good will of the owner. An owner could kill, maim, or injure their slaves without any consequence other than economics (slaves cost money).
An indentured servant had certain rights that were self evident. They could not be killed or maimed by an owner. They were recognized as humans and people. Their condition was not permanent. They could be beaten or punished without cause.
Two hundred years ago a child was considered by some to be a slave of a sort to their parent (read that as father). Abraham Lincoln was shipped around by his father to provide labor for neighbors and his father pocketed the proceeds. Lincoln wrote that on his 21st birthday he got his freedom.
I suggest that you read Puddin Head Wilson by Mark Twain. He was a lawyer, a country lawyer who was pretty smart. In one case Wilson proved that the master of a plantation in the antebellum era was actually a child of a slave who could pass for white. A slave, who was supposed to be mixed race, was in reality the son of the late master swapped at birth by the slave mother. The "happy ending" was that the former master was now a slave being sold and the former slave was having to come to grips with being a person with rights and wealth.