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. 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. Number of active holders of "Golden Card" of Western Union amounted to 9.5 million people worldwide. Western Union for more than 130 years provides money transfer services to its customers.