The slave-trade and slavery were the economic basis of the French Revolution. ‘Sad irony of human history,’ comments Jaurès. ‘The fortunes created at Bordeaux, at Nantes, by the slave-trade, gave to the bourgeoisie that pride which needed liberty and contributed to human emancipation.’ Nantes was the centre of the slave-trade. As early as 1666,108 ships went to the coast of Guinea and took on board 37,430 slaves, 12 to a total value of more than 37 millions, giving the Nantes bourgeoisie 15 to 20 per cent on their money. In 1700 Nantes was sending fifty ships a year to the West Indies with Irish salt beef, linen for the household and for clothing the slaves, and machinery for sugar-mills. Nearly all the industries which developed in France during the eighteenth century had their origin in goods or commodities destined either for the coast of Guinea or for America. The capital from the slave-trade fertilized them; though the bourgeoisie traded in other things than slaves, upon the success or failure of the traffic everything else depended.13