A potential brown menace to white race-areas would, indeed, arise in case of a brown-yellow alliance against the white peoples. But such an alliance could occur only in the first stages of a pan-colored war of liberation while the pressure of white world-predominance was still keenly felt and before the divisive tendencies within the brown world had begun to take effect. Short of such an alliance (wherein the browns would abet the yellows' aggressive, racial objectives in return for yellow support of their own essentially defensive, political ends), the brown world's emancipation from white domination would apparently not result in more than local pressures on white race-areas. It would, however, affect another sphere of white political control--black Africa. The emancipation of brown, Islamic North Africa would inevitably send a sympathetic thrill through every portion of the Dark Continent and would stir both Mohammedan and pagan negroes against white rule. Islam is, in fact, the intimate link between the brown and black worlds. But this subject, with its momentous implications, will be discussed in the next chapter. CHAPTER IV BLACK MAN'S LAND Black Man's Land is primarily Africa south of the Sahara Desert. Here dwell the bulk of all the 150,000,000 black men on earth. The negro and negroid population of Africa is estimated at about 120,000,000--four-fifths of the black race-total. Besides its African nucleus the black race has two distant outposts: the one in Australasia, the other in the Americas. The Eastern blacks are found mainly in the archipelagoes lying between the Asiatic land-mass and Australia. They are the Oriental survivors of the black belt which in very ancient times stretched uninterruptedly from Africa across southern Asia to the Pacific Ocean. The Asiatic blacks were overwhelmed by other races ages ago, and only a few wild tribes like the "Negritos" of the Philippines and the jungle-dwellers of Indo-China and southern India survive as genuine negroid stocks. All the peoples of southern Asia, however, are darkened by this ancient negroid strain. The peoples of south India are notably tinged with black blood. As for the pure blacks of the Australasian archipelagoes, they are so few in numbers (about 3,000,000) and so low in type that they are of negligible importance. Quite otherwise are the blacks of the Far West. In the western hemisphere there are some 25,000,000 persons of more or less mixed black blood, brought thither in modern times as slaves by the white conquerors of the New World. Still, whatever may be the destiny of these transplanted black folk, the black man's chief significance, from the world aspect, must remain bound up with the great nucleus of negro population in the African homeland.