8. At this time the development of the people of all the western parts of Asia was so great, and the wars as well as peaceful intercourse of different nations had so stimulated them all, that improvement kept a tolerably even step. Multitudes of populous cities and kingdoms existed in all directions. The magnificence of Solomon belongs to this period, the Jewish monarchy having reached the height of its glory and power, too high to be long endured by the proud and enterprising Assyrians. Commerce filled the east with activity and manufactures flourished, in some directions reaching a high degree of excellence. A true progress marked the general course of human effort. The psalms of David show to what a lofty point the religious ideas of that age were capable of being carried. Industrial pursuits and agriculture reached, in the next hundred and fifty years, the highest development they ever attained in some regions. 9. In the midst of this busy industry Nineveh rose, peerless in grandeur, enriching herself with the tribute and spoils of all countries, beautified by the master race, which was wise enough not to dry up the sources of their prosperity by the destruction of cities and kingdoms. The common policy, up to nearly the close of her splendid career, was to leave the real resources of all conquered nations untouched. After defeating her opposer in a battle, she received the submission of the king, imposed a heavy tax, or forced contribution, and an engagement to pay a definite annual tribute, and went on her way to subdue another nation to a like formal control. With misfortune, or a change of rulers in the dominant kingdom, the subject-kings would withhold tribute, raise an army, and the whole work of conquest had to be repeated. Thus the empire consisted of a stable nucleus, Assyria, and a vast floating mass of half independent kingdoms, states and cities which were now submissive and now in revolt. We may easily conceive how this comparatively mild mode of warfare would contribute to the general advance of the whole population. This mingling and clash of armies, surging to and fro of vast bodies of men, and the knowledge and culture received from the great and wealthy capital made the school of that period for the education of humanity. 10. The Assyrian annals show a continued growth in splendor and power and extent of dominion until the very eve of its fall. In the course of that time Egypt was invaded and partially subdued for the first time; and, in the impatience of frequent revolt, the practice commenced of removing whole nations from their original homes, supplying their place by others. Thus the Ten Tribes were transported from their homes in Samaria, and other nations brought to occupy their places.