Invented By: Samuel Morse.
Invented in the 1830's to the 1840's.
The Telegraph worked by sending electrical signals to communicate.
With the Telegraph you can communicate over long distances and that helped marketing.
You can talk to people way out in the west and long distances fast instead of letters which take for ever.
The Telegraph laid down the base of communication and it helped make Morse Code.
The telegraph helped the east communicate with the west which was being explored and mined of its raw minerals.