Why did the Babylonian empire have city walls ?

They had the walls as a pretective measure, since the walls reached around where everyone lived, it helped keep the people within safe from outside forces.

Explanation:

“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).