_The political and social structure_ of society changed. The crusades, long before, had given a shock to the political importance of the feudal aristocracy, and reviving commerce and art had shaken the system to its foundations. The Flemish weavers had arisen, and a mercantile class had clamored for new privileges. In the struggle of classes, and in the misfortunes of nobles, monarchs had perceived the advantages they might gain, and fortunate circumstances enabled them to raise absolute thrones, and restore a central power, always so necessary to the cause of civilization. Feudalism had answered many useful ends in the dark ages. It had secured a reciprocity of duties between a lord and his vassal; it had restored loyalty, truth, and fidelity among semi-barbarians; it had favored the cultivation of the soil; it had raised up a hardy rural population; it had promoted chivalry, and had introduced into Europe the modern gentleman; it had ennobled friendship, and spread the graces of urbanity and gentleness among rough and turbulent warriors. But it had, also, like all human institutions, become corrupt, and failed to answer the ends for which it was instituted. It had become an oppressive social despotism; it had widened the distinction between the noble and ignoble classes; it had produced selfishness and arrogance among the nobles, and a mean and cringing sycophancy among the people; it had perpetuated privileges, among the aristocracy, exceedingly unjust, and ruinous to the general welfare of society. It therefore fell before the advancing spirit of the age, and monarchies and republics were erected on its ruins. The people, as well as monarchs, had learned the secret of their power. They learned that, by combining their power, they could successfully resist their enemies. The principle of association was learned. Combinations of masses took place. Free cities were multiplied. A population of artificers, and small merchants, and free farmers arose. They discussed their privileges, and asserted their independence. Political liberty was born, and its invaluable blessings were conceived, if they were not realized. [Sidenote: Effects of Scholasticism.]