Final answer:
In the Congo during European colonization, Africans were forced to harvest rubber using their own bodies, suffering painful scraping to remove the latex, before transporting it to collection points for export.
Step-by-step explanation:
The method by which Africans transported rubber once it was tapped in the Congo Free State was labor-intensive and often inhumane due to the exploitation by European colonizers. Instead of using more sustainable and less harmful tapping methods, the Africans were forced to chop through the rubber-bearing vines, allowing the latex to cover their bodies which then had to be scraped off once hardened. This rubber was then likely carried by Africans, many of whom were subjected to severe coercion and control, to ports or other collection points for export to Europe.