A number of factors caused Anglo-American pirates, some of whom had been introduced to piracy during the buccaneering period, to look beyond the Caribbean for treasure as the 1690s began. The end of Britain's Stuart period had restored the traditional enmity between Britain and France, thus ending the profitable collaboration between English Jamaica and French Tortuga. The devastation of Port Royal by an earthquake in 1692 further reduced the Caribbean's attractions by destroying the pirates' chief market for fenced plunder. Caribbean colonial governors began to discard the traditional policy of "no peace beyond the Line," under which it was understood that war would continue (and thus letters of marque would be granted) in the Caribbean regardless of peace treaties signed in Europe; henceforth, commissions would be granted only in wartime, and their limitations would be strictly enforced. Furthermore, much of the Spanish Main had simply been exhausted; Maracaibo alone had been sacked three times between 1667 and 1678, while Río de la Hacha had been raided five times and Tolú eight.