Answer:
- to teach us something about life
 - to reveal what the writer has learned from his/her personal experiences
 - to aid us in understanding a time in history
 - to aid us in understanding a person or culture
 
Step-by-step explanation:
Literary nonfiction is a broad genre that can cover up many purposes. The writing style is what makes it literary for the author will use literary devices to unfold his / her ideas.
- The text may be about any current event the author resorts to to give his / her opinion and teach something to the readers.
 - The writer may do this with a literary style,
 - As long as the writer does not alter the facts, this is also a purpose.
 - This can also be developed .