The anthropogeographer recognizes the various social forces, economic and psychologic, which sociologists regard as the cement of societies; but he has something to add. He sees in the land occupied by a primitive tribe or a highly organized state the underlying material bond holding society together, the ultimate basis of their fundamental social activities, which are therefore derivatives from the land. The organic theory of society finds an apt description. If a state lacks the energy and national purpose, like Italy, or the possibility, like Switzerland, for territorial expansion, and accepts its boundaries as final, the natural increase of population upon a fixed area produces an increased density, unless certain social forces counteract it. The philosophy of history was superior to early sociology, in that its method was one of historical comparison, which inevitably guided it back to the land as the material for the first generalization.