294

Feudalism a transition of social order. There are two elementary sources of feudalism. The feudal system in its developed state based on land-holding. Other elements of feudalism. The rights of sovereignty. The classification of feudal society. Progress of feudalism. State of society under feudalism. Lack of central authority in feudal society. Individual development in the dominant group.

XIX. [ARABIAN CONQUEST AND CULTURE]

304

The rise and expansion of the Arabian Empire. The religious zeal of the Arab-Moors. The foundations of science and art. The beginnings of chemistry and medicine. Metaphysics and exact science. Geography and history. Discoveries, inventions, and achievements. Language and literature. Art and architecture. The government of the Arab-Moors was peculiarly centralized. Arabian civilization soon reached its limits.

XX. [THE CRUSADES STIR THE EUROPEAN MIND]

319

What brought about the crusades. Specific causes of the crusades. Unification of ideals and the breaking of feudalism. The development of monarchy. The crusades quickened intellectual development. The commercial effects of the crusades. General influence of the crusades on civilization.

XXI. [ATTEMPTS AT POPULAR GOVERNMENT]

328