In her later years wars broke out, which were handled by her with promptness and success. But age now weighed upon her. In 704, when she was more than eighty years old, she became so ill that for several months she was unable to receive her ministers. This weakening of the strong hand was taken advantage of by her enemies. Murdering her principal relatives, they broke into the palace and demanded her abdication. Unable to resist, she, with unabated dignity of mien, handed to them the imperial seal and the other emblems of power. In the following year she died. For more than forty years she had been the supreme ruler of China, and held her great office with a strength and dignity which may well be called superb. _THE TARTARS AND GENGHIS KHAN._ In the northern section of the vast Mongolian plateau, that immense outreach of pasture-lands which forms the great abiding-place of the shepherd tribes of the earth, there long dwelt a warlike race which was destined to play an extraordinary part in the world's history. The original home of this people, who at an early date had won the significant name of Mongol, or "the brave," was in the strip of territory between the Onon and the Kerulon, tributaries of the upper Amur River, the great water artery of East Siberia. In this retreat, strongly protected from attack, and with sufficient herbage for their flocks, the Mongols may have dwelt for ages unknown to history. We hear of them first in the ninth century, when they appeared as a section of the great horde of the Shiwei, attracting attention by their great strength and extraordinary courage, characteristics to which they owed their distinctive title. For two or three centuries they were among the tribes that paid tribute to China, and there was nothing in their career of special interest. Then they suddenly broke into startling prominence, and sent a wave of terror over the whole civilized world. The history of China is so closely connected with that of the nomad tribes that one cannot be given without the other, and before telling the story of the Mongols a brief outline of the history of these tribes is desirable. China is on three sides abundantly defended from invasion, by the ocean on the east, and by mountains and desert on the south and west. Its only vulnerable quarter is in the north, where it joins on to the vast region of the steppes, a country whose scarcity of rain unfits it for agriculture, but which has sufficient herbage for the pasturage of immense herds. Here from time immemorial has dwelt a race of hardy wanderers, driving its flocks of sheep, cattle, and horses from pasture to pasture, and at frequent intervals descending in plundering raids upon the settled peoples of the south.