Rich as was the French bourgeoisie, the colonial trade was too big for it. The British bourgeois, most successful of slave-traders, sold thousands of smuggled slaves every year to the French colonists and particularly to San Domingo. But even while they sold the slaves to San Domingo, the British were watching the progress of this colony with alarm and with envy. After the independence of America in 1783, this amazing French colony suddenly made such a leap as almost to double its production between 1783 and 1789. In those years Bordeaux alone invested 100 millions in San Domingo. The British bourgeois were the great rivals of the French. All through the eighteenth century they fought in every part of the world. The French had jumped gleefully in to help drive them out of America. San Domingo was now incomparably the finest colony in the world and its possibilities seemed limitless. The British bourgeoisie investigated the new situation in the West Indies, and on the basis of what it saw, prepared a bombshell for its rivals. Without slaves San Domingo was doomed. The British colonies had enough slaves for all the trade they were ever likely to do. With the tears rolling down their cheeks for the poor suffering blacks, those British bourgeois who had no West Indian interests set up a great howl for the abolition of the slave-trade.