Answer:
The correct answers are d, d.
Step-by-step explanation:
The Pax Romana was a period of sustained peace and stability during the first two centuries of the Roman Empire. It is generally considered to have lasted from 27 BC to 180 CE. Julius Caesar wasn't Rome's ruler during the Pax Romana, as he was murdered in 44 BC.
By the late 4th century, the Roman Empire was a vast empire stretching from along the Mediterranean Sea, from the Iberian Peninsula to the Middle East However, with wars at home and on its borders, the empire had become too large for one person to rule effectively. Emperor Theodosius I split the empire in two in 395.