Reply #47: There are not only "two major differences"

[ultraist]

That is an oversimplification. Perhaps YOU should read more about early indentured servitude and slavery of African Americans.

excerpts:

http://www.pbs.org/wgbh/aia/part1/1narr4.html

All were indentured servants. During their time as servants, they were fed and housed. Afterwards, they would be given what were known as "freedom dues," which usually included a piece of land and supplies, including a gun. Black-skinned or white-skinned, they became free.

This disorder that the indentured servant system had created made racial slavery to southern slaveholders much more attractive, because what were black slaves now? Well, they were a permanent dependent labor force, who could be defined as a people set apart. They were racially set apart. They were outsiders. They were strangers and in many ways throughout the world, slavery has taken root, especially where people are considered outsiders and can be put in a permanent status of slavery.
- David Blight, historian

The Middle Passage

Slaves packed like cargo between decks often had to lie in each other's feces, urine, and blood.
Over the centuries, between one and two million persons died in the crossing. This meant that the living were often chained to the dead until ship surgeons such as Alexander Falconbridge had the corpses thrown overboard.