Empire covers the largest area of any Empire in the world, and has the largest gross population. But that population is of very unequal political, economic, and defensive value. Only the white population in it can be reckoned fully efficient in any of these respects. The white population of the British Empire is only a little over fifty millions. If we set against that figure the sixty millions of the present German Empire, the eighty millions of the united Germany towards which Pan-Germanism is working, or the seventy millions of the white inhabitants of the United States, and also consider the extent and configuration of the territories to be defended, the weakness of the material basis on which that vast Empire is built at once becomes evident. Moreover, that efficient population is most unequally distributed. Four-fifths of it are concentrated in these islands. This, no doubt, is an advantage in so far as islands are difficult to invade or to conquer. Unfortunately, the islands in question are much too small even to support their existing population, and the need of securing free access of supplies from oversea is a serious strategical weakness. Besides, the comparative security of one part of the Empire is of little advantage if other parts, no less essential to the whole, are insecure. The Empire possesses two enormous land frontiers bordering on the territories of two of the greatest world States. Behind neither of these frontiers is there a sufficient development of economic and national strength to ensure the safety of our position.
The defence of an Empire whose parts are divided by the sea demands first and foremost a supreme navy. That supremacy is more essential than ever, now that the outlying parts of the Empire are regarded not as dependencies, but as integral portions whose maintenance is essential to the existence of the whole. On the other hand, the oversea possessions of the other Powers are only dependencies in the sense that the British Colonies once were, and not integral portions of themselves, and for that very reason the loss of naval supremacy means
