Prior to the electric telegraph, visual systems were used, including beacons, smoke signals, flag semaphore, and
An … See more

The first commercial electrical telegraph was the Cooke and Wheatstone system. A demonstration four-needle system was installed on the Euston to Camden Town section of Robert Stephenson's London and Birmingha… See more

Main article § Section: History of longitude § Land surveying and telegraphy.
The telegraph was very important for sending time signals to determine longitude, providing greater accuracy than previously … See more

The ability to send telegrams brought obvious advantages to those conducting war. Secret messages were encoded, so interception alone would not be sufficient for the opposing side to gain an advantage. There wer… See more

In America, the end of the telegraph era can be associated with the fall of the Western Union Telegraph Company. Western Union was the leading telegraph provider for America and was seen as the best compe… See more