What is the Pax Romana A. The first Roman Emperor. B. The 200 years of peace and prosperity in the Roman Empire. C. The name given to Gaius Octavian. D. The Riverside mascot.

The Pax Romana (Latin for "Roman Peace") is a roughly 200-year-long period in Roman history which is identified with increased and sustained inner hegemonial peace and stability

The answer is B. The 200 years of peace and prosperity in the Roman Empire