Answer:
the ghost told hamlet to take revenge against his brother Claudius, the one who killed him and not to take revenge of his mother.Hamlet disgust his wife Gertrude.
Explanation:
The family will pay for their feud with their children's lives
I would agree with you - the conclusion should leave readers with an important thought at the end.
This thought should never be new, or opposing to the previous ideas you had been writing before. It also shouldn't be confusing, but quite conversely - it should explain everything and put everything in place.
