Towards the end of the eleventh century, under Philip I., the enthusiasm for Crusades became general, and, as all the nobles joined in the holy mission of freeing the tomb of Jesus Christ from the hands of the infidels, large sums of money were required to defray the costs. New taxes were accordingly imposed; but, as these did not produce enough at once, large sums were raised by the sale of some of the feudal rights. Certain franchises were in this way sold by the nobles to the boroughs, towns, and abbeys, though, in not a few instances, these very privileges had been formerly plundered from the places to which they were now sold. Fines were exacted from any person declining to go to Palestine; and foreign merchants--especially the Jews--were required to subscribe large sums. A number of the nobles holding fiefs were reduced to the lowest expedients with a view to raising money, and even sold their estates at a low price, or mortgaged them to the very Jews whom they taxed so heavily. Every town in which the spirit of Gallo-Roman municipality was preserved took advantage of these circumstances to extend its liberties. Each monarch, too, found this a favourable opportunity to add new fiefs to the crown, and to recall as many great vassals as possible under his dominion. It was at this period that communities arose, and that the first charters of freedom which were obligatory and binding contracts between the King and the people, date their origin. Besides the annual fines due to the King and the feudal lords, and in addition to the general subsidies, such as the quit-rent and the tithes, these communities had to provide for the repair of the walls or ramparts, for the paving of the streets, the cleaning of the pits, the watch on the city gates, and the various expenses of local administration. Louis le Gros endeavoured to make a re-arrangement of the taxes, and to establish them on a definite basis. By his orders a new register of the lands throughout the kingdom was commenced, but various calamities caused this useful measure to be suspended. In 1149, Louis le Jeune, in consequence of a disaster which had befallen the Crusaders, did what none of his predecessors had dared to attempt: he exacted from all his subjects a sol per pound on their income. This tax, which amounted to a twentieth part of income, was paid even by the Church, which, for example's sake, did not take advantage of its immunities. Forty years later, at a council, or _great parliament_, called by Philip Augustus, a new crusade was decided upon; and, under the name of Saladin's tithe, an annual tax was imposed on all property, whether landed or personal, of all who did not take up the cross to go to the Holy Land. The nobility, however, so violently resisted this, that the King was obliged to substitute for it a general tax, which, although it was still more productive, was less offensive in its mode of collection.