The pax romana ended in 180 ce after over one hundred fifty years in existence. the end of this era ushered in a period of

The Pax Romana ended in 180 CE after over one hundred fifty years in existence. The end of this era ushered in a period of great instability, with civil wars dividing the empire, political conspiracies that resulted in countless assassinations of senators, provincial and slave rebellions to shake the order .

The Pax Romana was an era of Roman history marked by apparent peace and prosperity during the transition from the Republican period to the imperial period, which brought stability to the Roman Empire and secured Rome's authority over its provinces. The expression pax romana originates from the official language of the Roman Empire - Latin - and means "Roman peace". The policy of Pax Romana was applied throughout the empire.

after the french-indian war.

it reintroduced the two-party system.