The area later became a center for the slave trade.
See what is to be seen of the slave trade.
The report says 23 countries are making little effort to stop the slave trade.
But we do need the slave trade if we're not to go under.
To put it more simply, they were built on the blood of the slave trade.
The slave trade began in the 18th century, and was an important economic activity by 1750.
Some African states played a role in the slave trade.
He'd read enough to have an idea of what was going on here; slave trade.
At the age of 21 he joined his father in the slave trade.
Such activities were by no means limited to the slave trade.
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