Prodigies of valour, audacity, and tenaciousness were displayed by the citizens in these wars. But the bows and the hatchets of the arts and crafts had not always the upper hand in their encounters with the armour-clad knights, and many castles withstood the ingenious siege-machinery and the perseverance of the citizens. Some cities, like Florence, Bologna, and many towns in France, Germany, and Bohemia, succeeded in emancipating the surrounding villages, and they were rewarded for their efforts by an extraordinary prosperity and tranquillity. But even here, and still more in the less strong or less impulsive towns, the merchants and artisans, exhausted by war, and misunderstanding their own interests, bargained over the peasants' heads. They compelled the lord to swear allegiance to the city; his country castle was dismantled, and he agreed to build a house and to reside in the city, of which he became a co-burgher (com-bourgeois, con-cittadino); but he maintained in return most of his rights upon the peasants, who only won a partial relief from their burdens. The burgher could not understand that equal rights of citizenship might be granted to the peasant upon whose food supplies he had to rely, and a deep rent was traced between town and village. In some cases the peasants simply changed owners, the city buying out the barons' rights and selling them in shares to her own citizens.(17) Serfdom was maintained, and only much later on, towards the end of the thirteenth century, it was the craft revolution which undertook to put an end to it, and abolished personal servitude, but dispossessed at the same time the serfs of the land.(18) It hardly need be added that the fatal results of such policy were soon felt by the cities themselves; the country became the city's enemy.