Speculative misguidance?

Once again the BBC is to be thanked for bringing to our attention a prominent issue in our contemporary world by drawing attention to the Brattle report. The reference to the ‘19 million [who] include those Africans kidnapped and transported to the Americas and Caribbean and those born into slavery‘ which is indeed a blight upon those nations who participated in the slave trade originating in West Africa and conducted over many centuries, brings to our attention the extent of the harm caused by slavery, and also whilst pointing to the evidence that exists today of the transatlantic aspects of that slave trade by mentioning those ‘born into slavery‘ also leads us to ask where today is, and if there is none, why is there none, of the overland transportation of slaves from West Africa to the east? There is sufficient information available to provide an answer to that question, but I shall not rehearse it here lest the descriptions used infringe the sensibilities of the censors and my readers. Let me say nothing more than that some of the men at the least may perhaps have preferred the Western than the Eastern transport.