Shakespeare include the plot event in the act IV of Hamlet in which Horatio reads and reacts to Hamlet's letter about an encounter with pirates because of the reason to establish Horatio's steadfast loyalty to Hamlet. The answer in this question is establish Horatio's steadfast loyalty to Hamlet.
Try searching all of the words that you don't know, then write what it means down on a piece of paper. Reread the definitions, after that reread the article to see if you have a better understanding it. Also highlight the information that is difficult and challenging him, reread the sentences before and after that to see if you understand it.
I hope this helps. :)
