In the 30's of the twentieth century, Western Union has become the world's largest telegraph company. In the early 60s Western Union has put into operation transcontinental microwave system of data transmission via radio waves, completely replacing the web of telegraph poles and wires. By 1861 Western Union telegraph lines entangled the whole America. It's time to explore Europe. In October 1871 the company Western Union began to provide money transfer services, drawing on its own extensive telegraph network.