Final answer:
Julius Caesar's assassination led to civil wars and power struggles that ended with his heir, Octavian, transforming the deteriorating Roman Republic into the Roman Empire.
Step-by-step explanation:
The assassination of Julius Caesar marked the beginning of the end for the Roman Republic. Caesar's death in 44 BCE was orchestrated by senators who were concerned about his power and the impact on the Republic. Instead of restoring the Republic, it led to further turmoil and a power struggle. Caesar's heir, Octavian, inherited his wealth and ultimately transformed the troubled Republic into the Roman Empire.
Sulla's prior dictatorship had shown the possible future of Rome under single-man rule, and Caesar's own dictatorship, becoming indefinite, cemented autocratic leadership as a norm.
With Caesar gone, the underlying political conflicts quickly resurfaced, leading to a brutal succession of power along with civil wars that concluded with Octavian's unchallenged rule, now known as Augustus, as the first Emperor.