But such isolation is no longer possible. The currents of economic life, like most other phases of human activity, have swept beyond the local forests, the grass lands, the tilled fields, the oven and the carpenter's bench, and gaining momentum in their ever-widening course, they have circled the world. 3. _Worldizing Economic Activity_ The past hundred years have witnessed a speedy worldizing of human affairs built upon a transformation in the ways of making a living. These changes have been effected by the industrial revolution, which, toward the end of the eighteenth century began to make itself felt in Great Britain. Its influence spread over Europe, America and Australia during the last three-quarters of the nineteenth century, but it did not reach Japan until 1860. Almost within the memory of the present generation, therefore, the scope of trade, manufacture and finance, the search for markets, the organization and unification of labor and of popular thinking about economic problems, have passed from a local into a world field. The inventions and discoveries which were the immediate cause of the industrial revolution succeeded one another with a bewildering rapidity that is well illustrated in the case of communication. The steamboat, first made practicable in 1807, and the locomotive, invented about 1815, provided the means of rapid transportation of goods, people and messages. The power press (1814) and the manufacture of paper from wood-pulp (begun in 1854) made possible cheap and abundant reading matter. The telegraph, invented about 1837, laid the basis for instantaneous communication. The first trans-Atlantic cable (1858) annihilated the water barrier to thought. The telephone (1876) and the wireless (1896) brought the more remote parts of each country and of the world within easy reach of the centers of civilization, while the radio-phone (1921) enables millions to sit around a common table for thought, instruction or enjoyment. The camera (1802) supplemented by the moving picture process (1890) has enabled those who do not read to secure information that was formerly reserved for the learned and the cultured. Thus steam, electricity, and a number of other discoveries and inventions in the realm of natural science have brought the minds of the world in as close touch as were the inhabitants of a fifteenth century Italian city. The effects of industrialism date only from history's yesterday, yet its results have already been momentous and far-reaching. This is particularly true of the close dependence of industries upon supplies of raw materials and fuels, of the volume and the variety of the goods produced and transported, of the speed with which communications are sent, of the widened opportunities for travel, and of the immense amount of information on the printed page and the film that goes, each day, from one part of the world to another.