The communication of the Roman Empire was scarcely less free and open by sea than it was by land. Italy has by nature few safe harbors, but the energy and industry of the Romans corrected the deficiencies of nature by the construction of several artificial ports.

After the downfall of the Roman Empire its roads were either destroyed by the people through whose territories they led or by the conquerors, to render more difficult the approach of an enemy.

Civilization and commerce greatly suffered through the downfall of Rome, and did not again revive until after the struggles of the Northern Christian races with the Southern and Eastern nations, which had become Mohammedan. The sixth and seventh centuries were the darkest in the history of Europe. Charlemagne, toward the close of the eighth century, caused many of the old Roman roads to be repaired and new ones to be constructed. He, as well as several of his immediate successors, made use of mounted messengers to send imperial mandates from one part of the realm to the other. The rulers of the succeeding centuries did not profit, however, by this example, and the roads of the empire again fell into decay. Moreover, the public safety was greatly impaired by robbers and feudal knights, whose depredations were so heavy a tax upon commerce as to greatly discourage it. Trade under these circumstances would have been entirely destroyed, had it not been for the merchants' unions which were formed by the larger cities for the protection of their interests. These organizations maintained the most important thoroughfares, and even furnished armed escorts to wayfaring merchants. Commerce thus flourished in, and commercial relations were kept up among, the cities immediate between Venice and Genoa, as well as the cities on the Rhine and Danube. Florence, Verona, Milan, Strasbourg, Mayence, Augsburg, Ulm, Ratisbon, Vienna and Nuremberg were flourishing marts, and through them flowed the currents of trade between the north and the south. Out of these commercial unions grew in time the Hanseatic League, which from the thirteenth to the fifteenth century controlled the commerce of the northern part of Europe on both the water and the land. The object of this league, which at the height of its power included eighty-five cities, was to protect its members against the feudal lords on the land and against pirates on the sea. Its power extended from Norway to Belgium and from England to Russia. In all the principal towns on the highways of commerce the flag of the Hansa floated over its counting houses. Wherever its influence reached, its members controlled roads, mines, agriculture and manufactures. It often dictated terms to kings, and almost succeeded in monopolizing the trade of Europe north of Italy.

It is characteristic of the social and political condition of this time that the postal service was not carried on by the state, but was in the hands of the various municipalities, convents and universities. During the fifteenth and sixteenth centuries national power and national life made themselves felt, and with a change in the political system the system of communication and transportation changed also. Louis XI. of France took the first step toward making a nation of the French when he transferred the postal service from the cities and other feudal authorities to the state. Two or three centuries later, France obtained a national system of roads and canals. The idea was largely due to Colbert, the minister of Louis XIV. It was, however, not executed in detail until the middle of the last century. Many abuses grew up in connection with it, but on the whole it was probably the soundest and most efficient part of the French administration. A system of lines of communication, radiating from Paris, was constructed by skilled engineers, and placed under the supervision of men of talent, especially trained for the purpose at the Ecôle des Fonts et Chaussées. The whole system was further improved by Napoleon, and has served as a basis for the present system of railroad supervision.

The first artificial waterway constructed in France was the Languedoc Canal, connecting the Bay of Biscay with the Mediterranean. This gigantic work, designed by Riquet, was commenced in 1666, and completed in 1681. The canal is 148 miles long and its summit level is 600 feet above the sea, the works along its line embracing over one hundred locks and fifty aqueducts. A large number of canals have since been constructed, and France has at present over 4,000 miles of artificial waterways, or more than any other country of Europe.

Nowhere else was the same completeness of organization possible. The regular mail service of Germany dates back to the year of 1516, when Emperor Maximilian established a postal route between Brussels and Vienna and made Francis Count of Taxis Imperial Postmaster-General. The postal service of the empire greatly improved up to the time of the Thirty Years' War, which completely demoralized it. After the war the individual states and free cities, usurping imperial prerogatives, established postal routes of their own and thereby crippled the national service. The same war also did great damage to the public thoroughfares, and the commercial and manufacturing interests of the German empire were until the end of the eighteenth century in a deplorable condition. Frederick the Great, recognizing the fact that the industrial paralysis of Germany was owing chiefly to its defective means of communication, commenced to construct turnpikes and canals in Prussia, and the minor German princes one by one imitated his example, until the Napoleonic wars again put an end to internal improvements. The good work was resumed, however, after the downfall of Napoleon, and in 1830 Germany was intercrossed by from three to four thousand miles of turnpike.

In the Netherlands canals were constructed as early as the twelfth century. Being particularly well adapted to the flat country of Holland, they were rapidly extended until they connected all the cities, towns and villages of the country, and to a large extent took the place of roads. The largest canal of Holland is the one which connects the city of Amsterdam with the North Sea. It was constructed between the years of 1819 and 1825 at an expense of more than four million dollars. The city of Amsterdam owes to this canal its present commercial prosperity.

Public roads and the state postal service are of comparatively recent origin in Great Britain. The first public postal route was established in 1635, during the reign of Charles I. In 1678 a public stage-coach route was established between Edinburgh and Glasgow. The distance is only forty-four miles, but the roads were so bad that, though the coach was drawn by six able horses, the journey took three days. It was considered a great improvement when in 1750 it could be completed in half the time originally required. In 1763 a mail-coach made only monthly trips between London and Edinburgh, eight long days being required for the journey, which to-day is made in less than twelve hours. The number of stage passengers between these two capitals averaged about twenty-five a month, and rose to fifty on extraordinary occasions. In those days coaches were very heavy and without springs, and travelers not unfrequently cut short their journeys for want of conveniences.

Turnpikes in Great Britain do not even date as far back as stage-coaches. It is true the first turnpike act was passed as early as 1653, but the system was not extensively adopted until a century later. Previous to that time the roads of England, such as they were, were maintained by parish and statute labor. In the latter half of the last century, under improved methods of construction, turnpike roads multiplied rapidly. Both roads and vehicles attained, previous to the advent of the railroads, such a degree of perfection that the stage-coach made the journey between London and Manchester, 178 miles, in 19 hours; between London and Liverpool, 203 miles, in less than 21 hours; and between London and Holyhead, 261 miles, in less than 27 hours.

In spite of these improved facilities, the transportation of merchandise continued to be very expensive. Goods had to be conveyed from town to town by heavy wagons, and the cost of land-carriage between Manchester and Liverpool, a distance of thirty miles, was at times as high as forty shillings per ton.