inventors

Who was"Alexander Grham Bell and what did he invent?
He was Scientist Bell and he Invent Telephon.
Who was"Lavis Braille"and What did he invent?
He was a French linguist and he invented Reading for Blind.
Who was "Guglileno Marconi"and what did he invent?
He was"Inventor and what did invent comunication Thelegraphic