Answer:
A book about how Gandhi influenced the American civil rights movement
Explanation:
Answer: Well I believe the previous paragraph has been detonated out of existence.
The tone would be determined by the kind of people the author is writing for. A story for children is going to have a different tone than a graduate thesis even if they are on the same topic.
Hope that helps.
Write down any ideas that come to mind then you can see what catches your attention. Try using a mind map to help