In the Western Union in the 30s of the 20th century worked 14 thousand couriers delivering telegrams. In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. America was on the verge of civil war and needed a reliable connection between the North and South. On the telegraph market of the USA at this time were operated with six large companies: American Telegraph Company, New York Albany and Buffalo Electro-Magnetic Telegraph Company, Atlantic and Ohio Telegraph, Illinois & Mississippi Telegraph Company, New Orleans & Ohio Telegraph Company, and the brainchild of Sibley & Co. - The Western Union Telegraph. 1980 - for the first time in the history of Western Union revenues from money transfers exceeded the income from the telegraph service. In the 30's of the twentieth century, Western Union has become the world's largest telegraph company. July 3, 1884 the company's shares were included in the calculation base for the newly created stock index Dow Jones Transportation Average. In October 2006 the company made an initial public offering of shares on the New York Stock Exchange, becoming independent from First Data company. By 1861 Western Union telegraph lines entangled the whole America. It's time to explore Europe. 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.