The city had grown very little since the 14th century, yet its population was said to be over 50,000.
The city had no one left living in it, as it became a ghost town in the 19th century. 
mnli hypothesis: The city had no one left living in it, as it became a ghost town in the 19th century.  premise: The city had grown very little since the 14th century, yet its population was said to be over 50,000.