Sumerian cities were characterized by a. canals, protective walls, and homes made of wood. b. some narrow, unpaved streets, protective walls, and homes made of mud-bricks. c. brick streets, sewer systems, and homes made of stone. d. hilly roads, sewer systems, and homes made of adobe.

i think the answer is the one about environmental and social health.

hope this

“the iliad” (gr: “iliás”) is an epic poem by the ancient greek poet homer, which recounts some of the significant events of the final weeks of the trojan war and the greek siege of the city of troy (which was also known as ilion, ilios or ilium in ancient times).