The region of the world that displayed the most immediate and striking results from the new inventions in transport was North America. Politically the United States embodied, and its constitution crystallized, the liberal ideas of the middle eighteenth century. It dispensed with state-church or crown, it would have no titles, it protected property very jealously as a method of freedom, and—the exact practice varied at first in the different states—it gave nearly every adult male citizen a vote. Its method of voting was barbarically crude, and as a consequence its political life fell very soon under the control of highly organized party machines, but that did not prevent the newly emancipated population developing an energy, enterprise and public spirit far beyond that of any other contemporary population. Then came that acceleration of locomotion to which we have already called attention. It is a curious thing that America, which owes most to this acceleration in locomotion, has felt it least. The United States have taken the railway, the river steamboat, the telegraph and so forth as though they were a natural part of their growth. They were not. These things happened to come along just in time to save American unity. The United States of to-day were made first by the river steamboat, and then by the railway. Without these things, the present United States, this vast continental nation, would have been altogether impossible. The westward flow of population would have been far more sluggish. It might never have crossed the great central plains. It took nearly two hundred years for effective settlement to reach from the coast to Missouri, much less than halfway across the continent. The first state established beyond the river was the steamboat state of Missouri in 1821. But the rest of the distance to the Pacific was done in a few decades. If we had the resources of the cinema it would be interesting to show a map of North America year by year from 1600 onward, with little dots to represent hundreds of people, each dot a hundred, and stars to represent cities of a hundred thousand people. For two hundred years the reader would see that stippling creeping slowly along the coastal districts and navigable waters, spreading still more gradually into Indiana, Kentucky and so forth. Then somewhere about 1810 would come a change. Things would get more lively along the river courses. The dots would be multiplying and spreading. That would be the steamboat. The pioneer dots would be spreading soon over Kansas and Nebraska from a number of jumping-off places along the great rivers.