Step-by-step explanation:
(i)Graham Bell made it because there was a need in transport and communication.
(ii)There was some transport/communication crisis going on in England, which caused industrial revolution in England.So Graham Bell [there are other persons too who invented other things like steam locomotive by George Stephenson] thought to make it.
(iii)Yes,there are certain problems when it was made such as sending a human voice over a wire, later, Graham Bell could able to solve the problem.