Malachy Postlethwayt, a leading 18th-century British expert on commerce, called the rents and revenues of plantation slave labour “the fundamental prop and support” of his country’s prosperity. He described the British empire as “a magnificent superstructure of American commerce and naval power [built] on an African foundation”. Around the same time, an equally prominent French thinker, Guillaume-Thomas-François de Raynal, described Europe’s plantations worked by African enslaved people as “the principal cause of the rapid motion which now agitates the universe”. Daniel Defoe, the English author of Robinson Crusoe, but also a trader, pamphleteer and spy, bested both when he wrote: “No African trade, no negroes; no negroes, no sugars, gingers, indicoes [sic] etc; no sugar etc, no islands, no continent; no continent, no trade.”