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. Each money transfer is protected with control number, that allows you to track and to ensure prompt payment of money specified by you person. In 1914 Western Union engineers invented the first payment card - a prototype of the modern credit card. Western Union incomes for 2007 have made $4,9 billion US dollars, and the quantity of transactions has made 572 million.