No mention of who sold these slaves to the Europeans. For 1300 years, right up to the 20th century, the business was dominated by Muslim slavers. Slavery is truly America's original sin and will be a stain on her memory forever, but Europeans didn't just march in and grab them. They bought slaves wholesale from an African dealer network that goes back centuries.
http://autocww.colorado.edu/~toldy2/E64ContentFiles/AfricanH...