292 A BRIEF SURVEY OF HUMAN HISTORY out or valiantly fought for their liberties and thereby earned an important place among the " estates " of the realm. Their citizens, the burghers or burgesses, were the creators of the commons of modern democracies. Internally, the towns organised professional guilds, and externally, they formed leagues with other cities for purposes of commerce as well as defence. The craft-guilds were unions of workers which secured monopolies for their special indus- gjrij&f afforded training for their apprentices, laid down condi- r-tibns for efficiency, and protected their members much as trade-unions do today. There were unions of shoemakers, bakers, weavers, dyers, etc, The most famous of the leagues of commercial towns was the Hanseatic League of North Germany. Hansa in old German meant a confederation or union. The Hanseatic League included about eighty of the principal cities of Northern Europe. It established trading colonies of its mem- bers in London, Bruges, Bergen, and Novgorod. It lost its importance only with the new geographical discoveries of the fifteenth century and the consequent shifting of the highways of world commerce. The greatest of the cities of Southern Europe were con- centrated in Italy. They were Venice, Genoa, and Florence. Venice had- her beginning in the fifth century when the refugees from the attacks of Attila the Hun sought shelter among her marshes. In course of time, owing to the natural advantages of her position at the head of the Adriatic, as well as the enterprise of her daring citizens, she became the mistress of the Mediterranean as once Athens, Carthage, and Rome had been. In the immortal words of Byron— A thousand years their cloudy wings expand Around me, and a dying Glory smiles O'er the far times, when many a subject land