But about this time an event took place which caused the foundation of one of the most remarkable maritime cities in the world. In the year 476 Italy was invaded by the barbarians. One tribe, the Veneti, who dwelt upon the north-eastern shores of the Adriatic, escaped the invaders by fleeing for shelter to the marshes and sandy islets at the head of the gulf, whither their enemies could not follow by land, owing to the swampy nature of the ground, nor by sea, on account of the shallowness of the waters. The Veneti took to fishing, then to making salt, and finally to mercantile enterprises. They began to build, too, on those sandy isles, and soon their cities covered ninety islands, many of which were connected by bridges. And thus arose the far-famed city of the waters--"Beautiful Venice, the bride of the sea." Soon the Venetians, and their neighbours the Genoese, monopolised the commerce of the Mediterranean. The crusades now began, and for two centuries the Christian warred against the Turk in the name of Him who, they seem to have forgotten, if indeed the mass of them ever knew, is styled the Prince of Peace. One of the results of these crusades was that the Europeans engaged acquired a taste for Eastern luxuries, and the fleets of Venice and Genoa, Pisa and Florence, ere long crowded the Mediterranean, laden with jewels, silks, perfumes, spices, and such costly merchandise. The Normans, the Danes, and the Dutch also began to take active part in the naval enterprise thus fostered, and the navy of France was created under the auspices of Philip Augustus. The result of all this was that there was a great moving, and, to some extent, commingling of the nations. The knowledge of arts and manufactures was interchanged, and of necessity the knowledge of various languages spread. The West began constantly to demand the products of the East, wealth began to increase, and the sum of human knowledge to extend. Shortly after this era of opening commercial prosperity in the Mediterranean, the hardy Northmen performed deeds on the deep which outrival those of the great Columbus himself, and were undertaken many centuries before his day. The Angles, the Saxons, and the Northmen inhabited the borders of the Baltic, the shores of the German Ocean, and the coasts of Norway. Like the nations on the shores of the Mediterranean, they too became famous navigators; but, unlike them, war and piracy were their chief objects of pursuit. Commerce was secondary. In vessels resembling that of which the above is a representation, those nations went forth to plunder the dwellers in more favoured climes, and to establish the Anglo-Saxon dominion in England; and their celebrated King Alfred became the founder of the naval power of Britain, which was destined in future ages to rule the seas.