All of the disputed territories contain valuable minerals, and some of them yield important vegetable products such as rubber which in colder climates it is necessary to synthesize by comparatively expensive methods. But above all they contain a bottomless reserve of cheap labour. Whichever power controls equatorial Africa, or the countries of the Middle East, or Southern India, or the Indonesian Archipelago, disposes also of the bodies of scores or hundreds of millions of ill-paid and hard-working coolies. The inhabitants of these areas, reduced more or less openly to the status of slaves, pass continually from conqueror to conqueror, and are expended like so much coal or oil in the race to turn out more armaments, to capture more territory, to control more labour power, to turn out more armaments, to capture more territory, and so on indefinitely. It should be noted that the fighting never really moves beyond the edges of the disputed areas. The frontiers of Eurasia flow back and forth between the basin of the Congo and the northern shore of the Mediterranean; the islands of the Indian Ocean and the Pacific are constantly being captured and recaptured by Oceania or by Eastasia; in Mongolia the dividing line between Eurasia and Eastasia is never stable; round the Pole all three powers lay claim to enormous territories which in fact are largely unihabited and unexplored: but the balance of power always remains roughly even, and the territory which forms the heartland of each super-state always remains inviolate. Moreover, the labour of the exploited peoples round the Equator is not really necessary to the world's economy. They add nothing to the wealth of the world, since whatever they produce is used for purposes of war, and the object of waging a war is always to be in a better position in which to wage another war. By their labour the slave populations allow the tempo of continuous warfare to be speeded up. But if they did not exist, the structure of world society, and the process by which it maintains itself, would not be essentially different.