What was the social cost to laborers and slaves in serving the interests and goals of commerce?

According to Mun, what social role do merchants play?
What defines a good merchant?
What abilities were most useful for a successful merchant?
What was the national value of commerce and what was its ultimate goal?
How did the voyage of laborers from Europe differ from those coming from Africa?
How were these voyages similar?
Once in America, what were the differences between being an indentured servant and being a slave?
What was the social cost to laborers and slaves in serving the interests and goals of commerce?