Let me give a little attention to this idea. It is I believe a wrong idea, and one that may be very disastrous to our common English-speaking culture if it is too fondly cherished.
There can be no denying that the British Imperial system is a system different in its nature and size from a typical European state, from a state of the horse and road scale, like France, let us say, or Germany. And equally it is with the United States a new growth. The present British Empire is indeed a newer growth than the United States. But while the United States constitute a homogeneous system and grow more homogeneous, the British Empire is heterogeneous and shows little or no assimilative power. And while the United States are all gathered together and are still very remote from any serious antagonist, the British Empire is scattered all over the world, entangled with and stressed against a multitude of possible antagonists.
I have been arguing that the size and manageability of all political states is finally a matter of transport and communications. They grow to a limit strictly determined by these considerations. Beyond that limit they are unstable. Let us now apply these ideas to the British Empire.
I have shown that the great system of the United States is the creation of the river steamboat and the railway. Quite as much so is the present British Empire the creation of the ocean-going steamship—protected by a great navy.
The British Empire is a modern ocean state just as the United States is a modern continental state. The political and economic cohesion of the British Empire rests upon this one thing, upon the steamship remaining the dominant and secure means of world transport in the future. If the British Empire is to remain sovereign and secure and independent of the approval and co-operation of other states, it is necessary that steamship transport (ocean transport) should remain dominant in peace and invulnerable in war.
Well, that brings us face to face with two comparatively new facts that throw a shadow upon both that predominance and upon that invulnerability. One is air transport; the other the submarine. The possibilities of the ocean-going submarine I will not enlarge upon now. They will be familiar to everyone who followed the later phases of the Great War.
It must be clear that sea power is no longer the simple and decisive thing it was before the coming of the submarine. The sea ways can no longer be taken and possessed completely. To no other power, except Japan, is this so grave a consideration as it is to Britain.
And if we turn to the possibilities of air-transport in the future we are forced towards the same conclusion, that the security of the British Empire must rest in the future not on its strength in warfare, but on its keeping the peace within and without its boundaries.
I was a member of the British Civil Air Transport Committee, and we went with care and thoroughness into the possibilities and probabilities of the air. My work on that committee convinced me that in the near future the air may be the chief if not the only highway for long-distance mails, for long-distance passenger traffic, and for the carriage of most valuable and compact commodities. The ocean ways are likely to be only the ways for slow travel and for staple and bulky trade.
And my studies on that committee did much to confirm my opinion that in quite a brief time the chief line of military attack will be neither by sea nor land but through the air. Moreover, it was borne in upon me that the chief air routes of the world will lie over the great plains of the world, that they will cross wide stretches of sea or mountainous country only very reluctantly.