In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. Leaving the idea of expansion into Europe, Western Union took up the expansion of services in the U.S. market. Each money transfer is protected with control number, that allows you to track and to ensure prompt payment of money specified by you person. Number of active holders of "Golden Card" of Western Union amounted to 9.5 million people worldwide. Western Union made so that the time in all of American civil services was the same.