I want to know the answer to the following question:
What was the name of the city previously located on the site of Constantinople?
All the background I'm provided with is that "For much of the 4th century, Roman society stabilised in a new form that differed from the earlier classical period, with a widening gulf between the rich and poor, and a decline in the vitality of the smaller towns.". Is that enough to answer the question?
Answer: no