 Complete the following phrase:  Spengler has a low opinion of Civilizations, even those that engaged in significant expansion, because that expansion was not actual growth. One of his principal examples is that of Roman world domination. It was not an achievement because the Romans faced no significant resistance to their expansion. Thus they did not so much conquer their empire, but rather simply took possession of that which lay open to everyone. Spengler asserts that the Roman Empire did not come into existence because of the kind of Cultural energy that they had displayed in the Punic Wars. After the 