In 1920, Western Union has implemented the world's first transmission of images over the ocean. 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 1933, by the Western Union Company were invented "singing telegrams". In the 1910-1920 years. Western Union is actively engaged in researching, innovating in the field of data transmission.