Alexander Graham Bell
Who? Alexander Graham Bell was born in 1847 .Alexander Graham Bell was interested in sound from early age.
Why? His mother was deaf his father taught deaf children to speak. Before the telephone, he wanted to help those who couldn’t hear. The telegraph machine could only one message at a time.
How? He worked with Watson, his dad set him a challenge. He needed to make a talking machine and he worked with Watson . They rented two rooms next to each other.