Question

What marked the official transition from Roman Republic to Roman empire?

When GARUSMARR US begin his role as Consol?
When a Gustus, formally known as Octavian became emperor of Rome?
When Sulla marched on Rome and declared himself dictator?
When Tiberius beliefs threatened the senate and gained support of Rome’s underclass?

Answer 1

So in the first century of BC, Rome was a republic -- but eventually, senators began fighting for power between themselves and the republic soon fell into chaos. Two men, one of which were Julius Caesar, were able to wrestle Rome back from chaos and rule in their empires. Though he was murdered and his rule was brief, it marked the official transition from Roman Republic to Roman Empire.

Step-by-step explanation:

Answer 2

The correct answer is "When Augustus, formally known as Octavian became Emperor of Rome".

Octavian rose to power defeating Mark Antony and Lepidus for the control of the territories of the Roman Republic. The consolidation of all power into a single ruler declared emperor, officially indicates the transition towards an empire for Rome. Once Octavian became emperor, he applied severe fiscal, political and military reforms which led the way towards a more absolutist government.

Hope this helps!