Final answer:
Octavian, or Augustus Caesar, established the Pax Romana by gaining control of the Roman Empire, consolidating power, and initiating a long period of peace and stability. The correct answer is c) Octavian gained control of the Roman Empire and established the Pax Romana.
Step-by-step explanation:
Octavian, also known as Augustus Caesar, was instrumental in establishing the Pax Romana, a 200-year period of peace and stability in the Roman Empire. With his ascension, he gained control of the Roman Empire and claimed to be the restorer of peace and prosperity, initiating the start of the Pax Romana. He maintained a facade of the Republican system by controlling the Senate and holding positions with lifelong powers, thereby creating the structure needed for a single ruler to govern Rome effectively. Augustus's rule brought about not only political reforms but also social and economic stability, strengthening Rome internally and enhancing its influence globally. The correct answer to the student's question is: c) Octavian gained control of the Roman Empire and established the Pax Romana.