That they might protect themselves against pirates and excessive tolls and annoying legislation, the merchants of the north founded a protective league which was called the “Hansa.” The Hansa, which had its headquarters in Lübeck, was a voluntary association of more than one hundred cities. The association maintained a navy of its own which patrolled the seas and fought and defeated the Kings of England and Denmark when they dared to interfere with the rights and the privileges of the mighty Hanseatic merchants. I wish that I had more space to tell you some of the wonderful stories of this strange commerce which was carried on across the high mountains and across the deep seas amidst such dangers that every voyage became a glorious adventure. But it would take several volumes and it cannot be done here. Besides, I hope that I have told you enough about the Middle Ages to make you curious to read more in the excellent books of which I shall give you a list at the end of this volume. [Illustration: THE HANSA SHIP] The Middle Ages, as I have tried to show you, had been a period of very slow progress. The people who were in power believed that “progress” was a very undesirable invention of the Evil One and ought to be discouraged, and as they happened to occupy the seats of the mighty, it was easy to enforce their will upon the patient serfs and the illiterate knights. Here and there a few brave souls sometimes ventured forth into the forbidden region of science, but they fared badly and were considered lucky when they escaped with their lives and a jail sentence of twenty years. In the twelfth and thirteenth centuries the flood of international commerce swept over western Europe as the Nile had swept across the valley of ancient Egypt. It left behind a fertile sediment of prosperity. Prosperity meant leisure hours and these leisure hours gave both men and women a chance to buy manuscripts and take an interest in literature and art and music. Then once more was the world filled with that divine curiosity which has elevated man from the ranks of those other mammals who are his distant cousins but who have remained dumb, and the cities, of whose growth and development I have told you in my last chapter, offered a safe shelter to these brave pioneers who dared to leave the very narrow domain of the established order of things. They set to work. They opened the windows of their cloistered and studious cells. A flood of sunlight entered the dusty rooms and showed them the cobwebs which had gathered during the long period of semi-darkness. They began to clean house. Next they cleaned their gardens. Then they went out into the open fields, outside the crumbling town walls, and said, “This is a good world. We are glad that we live in it.” At that moment, the Middle Ages came to an end and a new world began. THE RENAISSANCE