the who part i can answer:Samuel F. B. Morse the when part i don't know
china
Many early telegraph cables were made of iron wire, but all modern ones are copper.
1837
telegraph
Italy
It made music.
Mistake
HOW THEY MADE A MORSE CODE MACHINE Samuel F.B. Morse and Alfred Vail developed an electric telegraph which sent pulses of electrical current to control an electromagnet that was located at the receiving end of the telegraph wire.
devices for telegraph he made inprovments in tecnology he invented cuplox telegraph electric pen for telegraph inprovments in telephone tec
The telegraph made it easier to type things down, and it also made it easier for doctors to get in touch with their patients.
well the guy that made this thingy wanted to build something so he did and that is why there was an electric telegraph invented.
The telegraph was invented on April fools day, otherwise known as April 1st. and 1832.