In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. By 1861 Western Union telegraph lines entangled the whole America. It's time to explore Europe. Payment systems are one of basic elements of infrastructure of e-commerce. In October 1871 the company has implemented the world's first telegraph money order. After a century money transfers have become a major source of income for Western Union. 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 - In 1884 Western Union has become a joint-stock company and was brought to the stock exchange. The company has entered in the first American stock index Dow Jones. Western Union made so that the time in all of American civil services was the same.