The electric telegraph was one of the first telecommunications technologies of the industrial age. Its immediate predecessors were homing pigeons, visual networks, the Pony Express, and railroads. By transmitting information quickly over long distances, the telegraph facilitated the growth in the railroads, consolidated financial and commodity markets, and reduced information costs within and between firms. This entry focuses on the industrial organization of the telegraph industry from its inception through its demise and the industry's impact on the American economy.

It had made a big impact. before people invented the electric telegraph, they didn't thought about they could send a message to each other that easily. The only option were left for them to choose for sending a message to their friends or family were handwrite a letter and it will takes much longer time to send an electric telegraph message than hand write a letter and send it to the post office and so on. It saved lots of time, when people invented the electric telegraph, they learned that hand write a letter is not the only choice left. If there are more convince and useful ways to use, why don't you use them? You are still going to choose the slow, antiquity ways? No.