Identify three examples of imagery in Mark Twain's "Cub Pilot on the Mississippi." Then explain how he uses the imagery to help convey a theme that glamorous dreams sometimes turn into harsh realities.

It is possible to see the use of imagery when Twain describes Captain Brown and when he shows the reason that made him criticize this captain's speech. Both descriptions show how expectation and reality can be very different things.
We can arrive at this answer because:
The use of imagery makes the reader understand that Twain was encouraged to believe that life at sea was wonderful because of people like Brown, but life at sea was very challenging and this was not shown to people, which shows that dreams glamorous things sometimes turn into harsh realities.
More information about imagery in the link:
https://brainly.com/question/12264549