If there were an international organization for war as well as for postage, and one or two nations should refuse to obey the decisions of a majority, or three-fourths of the organization, each of these recalcitrant nations could be boycotted economically and in many other ways by the remaining member nations. It is very doubtful if any nation would take such chances. Any international organization helps toward peace by making action less precipitate, for if it were known in advance that a conference were to take place, this would tend to make nations less disposed to go to war. In fact, all international conferences, like the International Congress of Criminal Anthropology, tend to intellectual, moral, and sociological solidarity between nations, in accordance with our demographic law of interdependence. (See Equation of law later on.) This International Congress of Criminal Anthropology, for instance, consists of some four hundred university specialists in anthropology, medicine, psychology, and sociology, who come from almost all countries of the world. In the eighteenth century international relations consisted of diplomatic conversations and were regulated by an occasional treaty, but, owing to the very inadequate means of communication, few international relations were required. In the nineteenth century the change in international conditions was very great. When international organizations represent some actual phase of life, whether educational, commercial or scientific, they really regulate their relations between nations and are often organs of international government. In short, international conferences and congresses act like legislatures between nations. If conferences had been in vogue and one had been held concerning the dispute between Austria and Serbia, very probably there would not have been any war, because, if for no other reason, the diplomats would have seen that it might lead to a general war in Europe, and as no nation cared to take that responsibility the diplomatic procedure would doubtless have been modified. Thus the conference over the Morocco question killed it as a cause of war. This and other practical examples of government between nations show that the great success, convenience, and benefit to all nations encourage the further development of international organizations. The difficulties and dangers predicted have not come to pass. International administration has come in the cases of railroads, ships, and automobiles. An elaborate international government has come (through treaties) in public health and epidemics, and international notification of the presence of disease has been made obligatory. SOVEREIGNTY CHANGES ACCORDING TO THE DEMOGRAPHIC LAW OF INTERDEPENDENCE OF NATIONS.