The Telephone!!
The telephone a very unique invention that can be used to communicate with other people from the comfort of your own living room from the great minds of Alexander Graham Bell, Antonio Meucci, Elisha Gray
How it works
The telephone is use by pressing a series of numbers that co-exist to a person your trying to contact, then you put the listing device up to your ear and wait for the other person to pick up then you talk into the microphone
Use
No longer will you have to send a telegraph and wait for sometimes long periods of time for someone to receive information when it can take minutes witch can be vital in some situations