The author's main purpose of writing a text is his main reason for writing. He could be writing to inform, entertain, describe, or educate people on a particular subject.
There are several reasons why an author could write a text. Unfortunately, you did not include the text here so that the reason can be identified.
To help you answer this question, read through the material carefully and determine the author's intentions.
If facts and details were reeled out, then informing the audience is the reason. Description is used to narrate the sequence of events.
Learn more about an author's main purpose here:
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