The Roman Empire expanded to rule most of the known world. In the process, it inevitably expanded beyond its ability to administrate. Equally inevitable was the subsequent fall of the Roman Empire, but it was not extinguished. Instead it divided under two Emperors. In the West it did break up and dissolve, but the Eastern Empire continued on and was able to defend itself from attackers to the West and to the East. The author has provided a compelling account of the period of triumph, as the world moved into the Middle Ages. The text is supported by an interesting monochrome photo-plate section. Strongly Recommended.