political gains were of only temporary duration, this parliament represented a watershed in English political history. The political influence of the Commons originally lay in their right to grant taxes. The financial demands of the Hundred Years' War were enormous, and the king and his ministers tried different methods of covering the expenses. The king had a steady income from crown lands, and could also take up substantial loans from Italian and domestic financiers. To finance warfare, he had to resort to taxation of his subjects. Taxation took two primary forms: levy and customs. The levy was a grant of a proportion of all moveable property, normally a tenth for towns and a fifteenth for farmland. This could produce large sums of money, but each such levy had to be approved by parliament, and the king had to prove the necessity. The customs therefore provided a welcome supplement, as a steady and reliable source of income. An "ancient duty" on the export of wool had existed since 1275. Edward I had tried to introduce an additional duty on wool, but this unpopular maltolt, or "unjust exaction", was soon abandoned. Then, from 1336 onwards, a series of schemes aimed at increasing royal revenues from wool export were introduced. After some initial problems and discontent, it was agreed through the Statute of the Staple of 1353 that the new customs should be approved by parliament, though in reality they became permanent. Through the steady taxation of EdwardIII's reign, parliament—and in particular the Commons—gained political influence. A consensus emerged that in order for a tax to be just, the king had to prove its necessity, it had to be granted by the community of the realm, and it had to be to the benefit of that community. In addition to imposing taxes, parliament would also present petitions for redress of grievances to the king, most often concerning misgovernment by royal officials. This way the system was beneficial for both parties. Through this process the commons, and the community they represented, became increasingly politically aware, and the foundation was laid for the particular English brand of constitutional monarchy. Chivalry and national identity Central to Edward III's policy was reliance on the higher nobility for purposes of war and administration. While his father had regularly been in conflict with a great portion of his peerage, EdwardIII successfully created a spirit of camaraderie between himself and