The growth of German municipalities since the days of their founder, Henry the Fowler, was not without effect upon the Empire. Distinctions of class were modified. The freeman became empowered to reserve to himself the right of going to war along with his lord. Imperial cities began to spring up; these were governed by a lieutenant of the Emperor, or by their own chief magistrate. They achieved confederation, thus guarding themselves against imperial and feudal encroachments. The 'League of the Rhine' and that of the Hanse Towns emerged as the fruit of this policy. The latter federation consisted of about four-score cities of Germany which under their charter enjoyed a commercial monopoly. This example succeeded so well that its promoter, Luebeck, had the satisfaction of seeing all cities between the Rhine and the Vistula thus connected. The clergy, jealous of this municipal power, besought the Emperor to repress the magistrates who had been called into being by the people, and who were closely allied to this commercial confederation. But the monarch advised the prelates to return to their churches lest their opulent friends became their enemies. The Rhine Hanse Towns The influence of the Hanseatic League of the Rhine district in the fourteenth century extended over the whole commercial radius of Germany, Prussia, Russia, the Netherlands, and Britain. It opened up new fields of commerce, manufacture, and industry. It paved the way for culture, it subdued the piracy which had existed in the Baltic, and it promoted a universal peace. On the other hand, it created jealousy; it boycotted the honest manufacturer and merchant who did not belong to the League, and fostered luxury in the Rhenish cities, which did much to sap the sturdy character of the people. The celebrity which many of these municipalities attained through their magnificence can be gathered from the historic buildings of Worms, Spires, Frankfort, Cologne, Augsburg, and Nuremberg. The splendour of these edifices and the munificence of their wealthy inhabitants could only be equalled in the maritime regions of Italy. But in the fifteenth century the power of the League began to decline. The Russian towns, under the leadership of Novgorod the Great, commenced a crusade against the Hanse Towns' monopoly in that country. The general rising in England, which was one of the great warehouses, under Henry VI and Edward IV reflected upon them. The Netherlands followed England's example. In the seventeenth century their existence was confined to three German towns--Luebeck, Hamburg, and Bremen. These no longer had the power to exercise their influence over the nation, and soon the League dropped out of existence. The Thirty Years' War