The death of Julius Caesar was essentially caused by the jealousy of another powerful man of ancient Rome - Cassius. Caesar was rising steadily to power when Cassius decided to do something about it. He stirred up a group of conspirators that together, changed the history of ancient Rome forever .
In the beginning, the loyal character Brutus became "Corrupted" when Cassius explained to him that the death of Caesar was essential to the freedom of Rome. Brutus believed him and from here the assassination plot was devised. Cassius, Brutus, and all the other conspirators they had gathered, circled around Caesar just when he was about to receive the crown at the senate and stabbed him to death. When Mark Antony heard the news, he sent a messenger to the conspirators telling them he wished to speak with them.
Antony pretended to go along with the scheme. He told the conspirators that he sided with them and shook their bloody hands. Later on at Caesar's funeral, Antony gave the famous "Friends, Romans, countrymen" speech that convined Romans to oppose the conspirators and side with him. This later led to a civil war. With everyone now against Cassius and his conspirators, they fled Rome.
The final encounter was at Philippi. Mark Antony greatly outnumbered the conspirators and their men, which led to Brutus and Cassius committing suicide. Afterwards, Antony and his men along with the other conspirators returned to Rome.
This truly is a tragedy considering that Brutus was a nave person that strongly believed Cassius's plan was in the best interest of Rome. Brutus was never considered a traitor either.
In conclusion, the plot of Julius Caesar is mainly driven forward by the actions of Cassius and his followers. The story is a prime example of what happens when we do not fully understand one another, which is an important lesson that gives this story the powerful message that it has.