massive walls and moats
Most Did Not Have Natural cover to protect them.
One city of Sumer was Bulhakia
Sumer is a city in Mesapotamia.
Uruk and Kish were cities in the ancient region of Sumer.
It is located near the Persian Gulf, the cities within Sumer are Babylon and Kish Good Luck!
Hi
trading
Because it was dangerous
Sargon
It is what you call the google answers!
Cities who were fighting over land and rivers.
The area was desserted and had no natural protection or cover to help protect the people of Sumer. ( Sumerians )