This result might have been obtained in two ways. A Napoleon, a Bismarck, or some potentate having conquered Europe, would from Paris, Berlin, or Rome, draw a railway map and regulate the hours of the trains. The Russian Tsar Nicholas I. dreamt of such a power. When he was shown rough drafts of railways between Moscow and Petersburg, he seized a ruler and drew on the map of Russia a straight line between these two capitals, saying, "Here is the plan." And the road was built in a straight line, filling in deep ravines, building bridges of a giddy height, which had to be abandoned a few years later, after the railway had cost about £120,000 to £150,000 per English mile. This is one way, but happily things were managed differently. Railways were constructed piece by piece, the pieces were joined together, and the hundred different companies, to whom these pieces belonged, gradually came to an understanding concerning the arrival and departure of their trains, and the running of carriages on their rails, from all countries, without unloading merchandise as it passes from one network to another. All this was done by free agreement, by exchange of letters and proposals, and by congresses at which delegates met to discuss well specified special points, and to come to an agreement about them, but not to make laws. After the congress was over, the delegates returned to their respective companies, not with a law, but with the draft of a contract to be accepted or rejected. Of course difficulties were met in the way. There were obstinate men who would not be convinced. But a common interest compelled them to agree in the end, without invoking the help of armies against the refractory members. This immense network of railways connected together, and the enormous traffic it has given rise to, no doubt constitutes the most striking trait of the nineteenth century; and it is the result of free agreement. If somebody had foretold it eighty years ago, our grandfathers would have thought him idiotic or mad. They would have said: "Never will you be able to make the shareholders of a hundred companies listen to reason! It is a Utopia, a fairy tale. A central Government, with an 'iron' dictator, can alone enforce it." And the most interesting thing in this organization is, that there is no European Central Government of Railways! Nothing! No minister of railways, no dictator, not even a continental parliament, not even a directing committee! Everything is done by free agreement.