The repressive regulations against commerce could not be perfectly enforced. Although the arrival of a ship from Spain was a real event, British, Dutch, and French traders frequented the coast, opening markets with their swords, and often turning buccaneers and sacking a town when not satisfied with their reception. But the burning of a few coast hamlets was more than compensated by the advantages of practical free-trade, and Venezuela owed much of the prosperity she enjoyed during the seventeenth century to these semi-pirates. The settlements crept along the Andean valleys to the Colombian frontier; the Creoles ventured farther and farther into the wide plains of the Orinoco and their cattle were soon roaming half-wild in the immense and luxuriant pastures stretching south of the agricultural strip. From the mixture of the Indians of the llanos with Europeans sprang a new race of men, the semi-nomadic llaneros, whose hardiness, courage, horsemanship, and prowess as hunters of big game have given them equal celebrity with the gauchos of the Argentine, the cossacks of the Russian steppes, or the Texas cowboys. The buccaneers and smuggling traders were especially active in the latter part of the seventeenth century. In 1654 Frenchmen were repelled in an attack on Cumana, but in 1669 the Britisher, Morgan, sacked Maracaibo, and in 1679 the French pillaged Caracas itself. The paralysis suffered by Spain during the war of the Spanish Succession nearly destroyed Venezuelan commerce, and it did not recover with the peace of Utrecht. Only five ships arrived in the first thirty years of the eighteenth century, and from 1706 to 1721 not a single vessel sailed for Spain.