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. By 1861 Western Union telegraph lines entangled the whole America. It's time to explore Europe. Number of active holders of "Golden Card" of Western Union amounted to 9.5 million people worldwide. 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.