Answer: As the tragic figure in the play, Brutus’ involvement in Caesar’s assassination, in which Brutus murders his friend, eventually leads to his downfall. This is how The Tragedy of Julius Caesar explores the theme of betrayal.
Explanation: In Shakespeare's The Tragedy of Julius Cesar, Brutus is one of Julius Caesar's closest friends; however, when he begins to see Caesar as a dictator and as a dangerous man for Rome, he joins the conspiracy to murder him. Although Brutus was only seeking to benefit Rome, his involvement in Caesar's assassination made him a traitor due to the strong bond he had with Caesar. After murdering him, Brutus asks himself if this was the right thing to do and starts to feel guilty about it. Eventually, he becames the tragic hero as the play ends with his death.