Final answer:
The period of peace throughout the Roman Empire lasting 207 years is known as Pax Romana. It was initiated by Augustus, the first Roman Emperor, and lasted from approximately 27 BCE to 180 CE.
Step-by-step explanation:
The period of peace throughout the Roman Empire lasting 207 years is known as Pax Romana. It was initiated by Augustus, the first Roman Emperor, and lasted from approximately 27 BCE to 180 CE. During this time, the empire experienced stability, economic prosperity, and cultural achievements.