Final answer:
Caligula was feared of being assassinated due to his tyrannical rule over Rome. He was ultimately killed in 41 A.D. after a public event by conspirators seeking to restore the Republic.
Step-by-step explanation:
For many years, Caligula lived in fear of being assassinated. His radical rule over Rome and the extreme measures he took to ensure personal power made him many enemies. The cruelty that characterized his reign following an illness in 37 CE, along with his opulent construction projects, created a wide-scale resentment towards him. Caligula was known for his megalomania and lavish public spectacles, which while pleasing to the public, were financed by the impoverishment of other sectors of the empire.
In 41 A.D., Caligula was attacked following a public event he was attending. This attack was orchestrated by a conspiracy formed by officers of the Praetorian Guard, senators, and courtiers, which marked his ultimate downfall. Although there was an attempt to restore the Republic in the aftermath of his assassination, it was not successful and instead his uncle Claudius was appointed as the next emperor.