The History of Phone's through innovation and change.

This term I have been learning about The history of Innovation and change. My topic was phones. The Learning object was to find something from the past and write the history of phones through innovation and change. I found this task quite easy to begin with. Something I need to work on is making sure I reread my work. I would like to know more about why Alexander Graham Bell (which was the person who invented a phone) came up with an idea to make telephones.