At the beginning of the second quarter of the nineteenth century the central area of the Far East, comprising China, Korea and Japan, with approximately half the population of Asia and a quarter of the population of the world, was still almost inaccessible to the travel and commerce of Western nations and virtually impervious to Western cultural influences. In particular, the vast empire of China, under the Ch'ing dynasty set up in Peking by the Manchus in 1644, remained untouched by the internal disintegrations and external encroachments which had overtaken the more westerly of the major Asian powers since the end of the seventeenth century. The Mogul empire had disappeared and over most of India had been replaced by the direct or indirect rule of the British East India Company; the Ottoman empire had lost territory to Russia and had been weakened by the secession of Egypt and the national revolt of the Greeks; Persia also had lost territory to Russia and had been curtailed in the east by the new realm of Afghanistan. But China had not merely suffered no loss of territory since 1700, but had extended her borders by the incorporation of the central Asian empire of the Kalmuk Mongols including Tibet. This massive political organism, reaching from the Pacific to the Pamirs, was loosely, but effectively, controlled by a central government in Peking; it inherited a tradition of imperial unity closely associated with the teaching of the Confucian scholar class and going back to an age contemporary with the Roman empire of Augustus.