To meet emergencies, which were now becoming chronic, extraordinary taxes were established, the non-payment of which involved the immediate imprisonment of the defaulter; and the debasement of the coinage, and the alienation of certain parts of the kingdom, were authorised in the name of the King, who had been insane for more than fifteen years. The incessant revolts of the bourgeois, the reappearance of the English on the soil of France, the ambitious rivalry of Queen Isabel of Bavaria leagued with the Duke of Burgundy against the Dauphin, who had been made regent, at last, in 1420, brought about the humiliating treaty of Troyes, by which Henry V., king of England, was to become king of France on the death of Charles VI. This treaty of Troyes became the cause of, and the pretext for, a vast amount of extortion being practised upon the unfortunate inhabitants of the conquered country. Henry V., who had already made several exactions from Normandy before he had obtained by force the throne of France, did not spare the other provinces, and, whilst proclaiming his good intentions towards his future subjects, he added a new general impost, in the shape of a forced loan, to the taxes which already weighed so heavily on the people. He also issued a new coinage, maintained many of the taxes, especially those on salt and on liquors, even after he had announced his intention of abolishing them. At the same time the Dauphin Charles, surnamed _Roi de Bourges_, because he had retired with his court and retinue into the centre of the kingdom (1422), was sadly in want of money. He alienated the State revenues, he levied excise duties and subsidies in the provinces which remained faithful to his cause, and he borrowed largely from those members of the Church and the nobility who manifested a generous pity for the sad destiny of the King and the monarchy. Many persons, however, instead of sacrificing themselves for their king and country, made conditions with him, taking advantage of his position. The heir to the throne was obliged in many points to give way, either to a noble whose services he bargained for, or to a town or an abbey whose aid he sought. At times he bought over influential bodies, such as universities and other corporation, by granting exemptions from, or privileges in, matters of taxation, &c. So much was this the case that it may be said that Charles VII. treated by private contract for the recovery of the inheritances of his fathers. The towns of Paris and Rouen, as well as the provinces of Brittany, Languedoc, Normandy, and Guyenne, only returned to their allegiance to the King on conditions more or less advantageous to themselves. Burgundy, Picardy, and Flanders--which were removed from the kingdom of Charles VII. at the treaty of peace of Arras in 1435--cordially adopted the financial system inaugurated by the Duke of Burgundy, Philip the Good.