The United States abolished the importation of slaves in 1808. Before that, 361,000 African slaves had been imported into English-speaking North America. [1] Through natural increase, their number in the United States rose to 1.75 million in 1825 and 4.5 million in 1861. By contrast, from the time of the Arab conquest of the Middle East in the seventh century, approximately 14 million black slaves were imported into the area that extends from Morocco through Iran. [2]
The first reliable census conducted in the Middle East... "
https://www.amren.com/features/2017/02/black-slavery-middle-east/#.WLHaH2MhdXk.twitter
