These monasteries, like the bishoprics, were endowed with lands which were increased from time to time by pious gifts of kings, nobles, and other laymen. Ecclesiastical bodies thus came in time to hold a very considerable share of the land of the country. The wealth and cultivation of the clergy and the desire to adorn and render more attractive their buildings and religious services fostered trade with foreign countries. The intercourse kept up with the church on the Continent also did something to lessen the isolation of England from the rest of the world. To these broadening influences must be added the effect which the Councils made up of churchmen from all England exerted in fostering the tardy growth of the unity of the country. *5. Danish and Late Saxon England.*--At the end of the eighth century the Danes or Northmen, the barbarous and heathen inhabitants of the islands and coast-lands of Denmark, Norway, and Sweden, began to make rapid forays into the districts of England which lay near enough to the coasts or rivers to be at their mercy. Soon they became bolder or more numerous and established fortified camps along the English rivers, from which they ravaged the surrounding country. Still later, in the tenth and eleventh centuries, under their own kings as leaders, they became conquerors and permanent settlers of much of the country, and even for a time put a Danish dynasty on the throne to govern English and Danes alike. A succession of kings of the West Saxon line had struggled with varying success to drive the Danes from the country or to limit that portion of it which was under their control; but as a matter of fact the northern, eastern, and central portions of England were for more than a century and a half almost entirely under Danish rule. The constant immigration from Scandinavia during this time added an important element to the population--an element which soon, however, became completely absorbed in the mixed stock of the English people. The marauding Danish invaders were early followed by fellow-countrymen who were tradesmen and merchants. The Scandinavian countries had developed an early and active trade with the other lands bordering on the Baltic and North seas, and England under Danish influence was drawn into the same lines of commerce. The Danes were also more inclined to town life than the English, so that advantageously situated villages now grew into trading towns, and the sites of some of the old Roman cities began again to be filled with a busy population. With trading came a greater development of handicrafts, so that the population of later Anglo-Saxon England had somewhat varied occupations and means of support, instead of being exclusively agricultural, as in earlier centuries.