576 IV. THE NINETEENTH CENTURY Persia, Western Turkistan and Afghanistan, which obey the sacred law of Islam, and China, which has customs all her own. It is hard to estimate the total number of human beings who live under the English common law, for one does not know whether to reckon in the semi-savage natives of such regions as Uganda, for instance, or Fiji. But there are probably one hundred and thirty millions of civilized persons (without counting the natives of India) who do: and the number living under some modern form of the Roman law is still larger. It is of the process by which two systems which had their origin in two small communities, the one an Italian city, the other a group of Teutonic tribes, have become extended over nine-tenths of the globe that I propose to speak in the pages that follow. There are analogies between the forms which the process took in the two cases. There are also contrasts. The main contrast is that whereas we may say that (roughly speaking) Rome extended her law by conquest, that is, by the spreading of her power, England has extended hers by settlement, that is, by the spreading out of her race. In India, however, conquest rather than colonization has been the agency employed by England, and it is therefore between the extension of English law to India and the extension of Roman law to the Roman Empire that the best parallel can be drawn. It need hardly be added that the Roman law has been far more changed in descending to the modern world and becoming adapted to modern conditions of life than the law of England has been in its extension over new areas. That extension is an affair of the last three centuries only, and the whole history of English law is of only some eleven centuries reckoning from Kings Ine and Alfred, let us say, to a. d. 1900, or of eight, if we begin with King Henry the Second, whereas that of Roman law covers twenty-five centuries, of which all but the first three have witnessed the process of extension, so early did Rome be^in to impose her law upon her subjects. To the changes, however, which have passed on the substance of the law we shall return presently. Let us begin by examining the causes and cir- cumstances which induced the extension to the whole ancient
