The biggest internal conflict is Hamlet's struggle to decide what to do about his father's death. However, it is caused by the external struggle of his father's murder. In the end, Hamlet is the one who has to deal with it.
I would like to answer this question by approaching it from a slightly different angle. I think it is easy to jump to thinking of the conflicts that Hamlet as a character faces, and clearly there are many that he has to confront. However, this temptation to jump to the title character can lead us to forget and ignore the other important characters and the conflicts that they themselves face.
For example, let us think of Ophelia and the many conflicts that she faces. She is clearly in love with Hamlet, yet both...
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