The most important invention in the world is Telephone .
Without telephone ,we cannot connect with each other quickly .People used to write letters in order to keep in touch with each other ,but receiving a letter may take you a month .
The first telephone was invented in the 18th century .Thanks to Antonio Meucci ,without him ,we can't have such convenient communication .
Telephone cuts down the spaces between human beings .
That's why telephone is the most important invention in the world.