In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. Western Union offers one of the easiest ways for families and friends to send money and stay connected almost anywhere in the world. Each money transfer is protected with control number, that allows you to track and to ensure prompt payment of money specified by you person. One of the common kinds of money transfer is a transfer via the international system of Western Union. Sibley, the founder of Western Union, did not build a new telegraph lines, and persuaded the other players to join. American Telegraph Company, however, still had to buy it.