Economic Phenomena before and after War is the result of the author's search for a scientific explanation of modern wars, by means of economic statistical data, in the statistics of consumption, production and natural growth of population. The theory discussed assumes that a state of war in modern communities is dependent on the general economic equilibrium, which becomes more and more unstable as industrialization progresses. A state of war indicates a turning point in the action of balancing forces; it moves the economic forces in an opposite direction and is therefore a means for stabilizing the general economic equilibrium.