To the economic causes of the unrest of the peasantry and labouring classes during the fifteenth and sixteenth century, we can refer only very briefly. At the time of the great migration of the fifth century, the free barbarian nations were organised on a tribal or village basis. By the end of the tenth century, however, what is known as the Feudal System had been established all over Europe. "No land without a lord" was the underlying principle of the whole Feudal System. Either by conquest or usurpation, or by more or less compulsory voluntary agreement, even the free primitive communities (_die Markgenossenshaften_) of the Teutonic races had been brought under the dominion of the lords, spiritual or temporal, claiming suzerainty over the territory in which they were situated. The claims of the Feudal Magnates seem ever to have been somewhat vague and arbitrary. At first they were comparatively light, and may well have been regarded and excused as a return for services rendered. The general tendency, however, was for the individual power of the lords to extend itself at the cost and to the detriment of the rural communities, and for their claims steadily to increase and to become more burdensome. During the fourteenth century many causes had combined to improve the condition of the industrial classes; and during the end of the fourteenth and the early part of the fifteenth century the condition of the peasantry and artisans of Northern Europe was better than it had ever been before or has ever been since: wages were comparatively high, employment plentiful, food and other necessaries of life both abundant and cheap.[7:1] At the beginning of the sixteenth century, however, the prices of the necessaries of life had risen enormously, and there had been no corresponding increase in the earnings of the industrial classes. Moreover, the Feudal Magnates had commenced to exercise their oppressive power in a hitherto unparalleled manner: old rights of pasture, of gathering wood and cutting timber, of hunting and fishing, and so on, had been greatly curtailed, in many cases entirely abolished, tithes and other manorial dues had been doubled and trebled, and many new and onerous burdens, some of them entirely opposed to ancient use and wont, had been imposed. In short, the peasantry and labouring classes generally were oppressed and impoverished in countless different ways.