In the early forties of the 20th century, Western Union has used the first time a commercial intercity microwave transmission system. Another invention of Western Union - time synchronization. In 1866, Sibley ordered the engineers to develop a Western Union telegraph system of stock quotes in real time. One of the common kinds of money transfer is a transfer via the international system of Western Union. Before transition to remittances Western Union company rendered services on sphere of cable communication. Western Union made so that the time in all of American civil services was the same.