jan 1, 27 BC - Formation of Roman Empire. Beginning of Pax Romana.

Description:

Augustus is given titles of Princeps and Augustus by Roman Senate. Formation of influential Praetorian Guard to provide security to Emperor.

https://en.wikipedia.org/wiki/Augustus

https://en.wikipedia.org/wiki/Roman_Empire#Transition_from_Republic_to_Empire

https://en.wikipedia.org/wiki/Pax_Romana

https://en.wikipedia.org/wiki/Praetorian_Guard

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