Statistics for occurrence #1 of “Northern Africa” in chapter 9 of George Bancroft, History of the Colonization of the United States, Vol. 1, 17th edition.:

...s to the coasts of Northern Africa, where each mercantile city became a nest of pirates, and every Christian the wonted booty of the successful corsair Servitude was thus the doom of the Christian in Northern Africa : the hatred of the Moorish dominion extending to all Africa, an indiscriminate and retaliating bigotry felt no remorse at dooming the sons of Africa to bondage. All Africans were esteemed as Moors....
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