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. In 1935, Western Union has put into operation first intercity fax communication. In 1877, starting from September, New York City residents began to have the opportunity to check the time on clock with the "time ball", located on the roof of constructed in the same year a new corporate headquarters - Western Union Building. In the early 60s Western Union has put into operation transcontinental microwave system of data transmission via radio waves, completely replacing the web of telegraph poles and wires. The size of the commission fee for the transfer is charged according to the Western Union tariffs and depends on the amount of money sent. By 1861 Western Union telegraph lines entangled the whole America. It's time to explore Europe. 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.