In the 30's of the twentieth century, Western Union has become the world's largest telegraph company. In 1860 the U.S. Congress arranged among the telegraph companies a competition to create a national line. The winner was Western Union. Another invention of Western Union - time synchronization. Payment systems are one of basic elements of infrastructure of e-commerce. The first offices of company were located in the Reynolds Arcade building in Rochester, New York. The sign above the main entrance to the building -