The slave trade of colonial America days began with Africans - Sub-Saharan AFRICANS - selling Africans from other tribes and nations captured in battle.
Right now today Africans in Libya are selling African en route to Europe as slaves (woman are told to bring condoms because they will be raped), and Boko Haram in Nigeria has been making slaves of school girls they've kidnapped.
btw, Africans owned African slaves in America.
Now about that book,,,
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Hey, wait a minute, ain'tchu the one who posted a meme about another memer wanting to ban HIM for trolling your crybaby ass? Thafuq you think you are?