non fiction books are like books that state facts. They are books about something that happened in real life or could happen.
a book with true facts. fiction isnt real A Spy Called Intrepid Adventures of Casanova of Milan Communal Property: The Ann Northrop Story Diary of Ann Franks
Non-fiction is a book with factual information. Some books, such as comic books or poetry are classified as non-fiction regardless.
Autobiography, because it is about someone's life which is real. So an example of fiction would be like Cinderella or Snow White.
i think you mean what is the MAIN IDEA