But in many towns, outside the town population properly speaking, outside the patrician families who generally governed the Rath, outside the guilds, outside the city organization altogether, there were other bodies dwelling within the walls and forming _imperia in imperiis_. These were the religious corporations, whose possessions were often extensive, and who, dwelling within their own walls, shut out from the rest of the town, were subject only to their own ordinances. The quasi-religious, quasi-military Order of the Teutonic Knights (_Deutscher Orden_), founded at the time of the Crusades, was the wealthiest and largest of these corporations. In addition to the extensive territories which it held in various parts of the empire, it had establishments in a large number of cities. Besides this there were, of course, the Orders of the Augustinians and Carthusians, and a number of less important foundations, who had their cloisters in various towns. At the beginning of the sixteenth century, the pomp, pride, and licentiousness of the Teutonic Order drew upon it the especial hatred of the townsfolk; and amid the general wreck of religious houses none were more ferociously despoiled than those belonging to this Order. There were, moreover, in some towns, the establishments of princely families, which were regarded by the citizens with little less hostility than that accorded to the religious Orders. Such were the explosive elements of town life when changing conditions were tending to dislocate the whole structure of mediaeval existence. The capture of Constantinople by the Turks in 1453 had struck a heavy blow at the commerce of the Bavarian cities which had come by way of Constantinople and Venice. This latter city lost one by one its trading centres in the East, and all Oriental traffic by way of the Black Sea was practically stopped. It was the Dutch cities which inherited the wealth and influence of the German towns when Vasco da Gama's discovery of the Cape route to the East began to have its influence on the trade of the world. This diversion of Oriental traffic from the old overland route was the starting-point of the modern merchant navy, and it must be placed amongst the most potent causes of the break-up of mediaeval civilization. The above change, although immediately felt by the German towns, was not realized by them in its full importance either as to its causes or its consequences for more than a century; but the decline of their prosperity was nevertheless sensible, even now, and contributed directly to the coming upheaval.