Answer:
Trebonius, Metellus Cimber, and Casca were three of the conspirators involved in the assassination of Julius Caesar on March 15, 44 BC.
Trebonius: He was a trusted friend and military commander of Caesar, who was tasked with keeping Mark Antony occupied outside the Senate House during the assassination. Trebonius had earned Caesar's trust and was able to exploit it to gain access to him. He pretended to present a petition to Caesar while others were killing him, and then he led Antony away from the scene, allowing the other conspirators to carry out the assassination.
Metellus Cimber: He was also a member of the conspiracy and was tasked with distracting Caesar by petitioning for the return of his exiled brother. Cimber grabbed Caesar's toga and pulled it from his shoulder, signaling the beginning of the attack.
Casca: He was one of the first conspirators to stab Caesar and delivered the first blow to him. Casca was a senator and a member of an influential family, and his role was to help ensure that the assassination would be seen as a legitimate act by the Senate and the public.
Overall, Trebonius, Metellus Cimber, and Casca played important roles in enabling the assassination of Julius Caesar to occur. They each had specific tasks to carry out that contributed to the success of the conspiracy, and their actions helped to bring about a major turning point in Roman history.