The number of people per square mile is the population density
A city that has a problem with smog is most likely a MDC and is experiencing it due to heavy air pollution. <span />
Just a brief history of the Illiad:
This story is all about how Ilium, otherwise known as Troy, fell. It is a Greek poem attributed to Homer. The story is set during the Trojan war near the end of it. it all started when Paris, stole Helen from Menelaus who is the King of Troy.
Attached is the re-typed summary and the answers to your questions. I hope this helps.