Question

which factor is unique to the city-states of mesopotsnian civilizations

Answer 1

Hey there Citalli3loza,

Which factor is unique to the city - states of Mesopotamian civilization?

Answer:

Location along the Tigris and Euphrates River.

Hope this helps :D

~Natasha♥

Answer 2

The Location along the Tigris and Euphrates River is a unique factor to the city-states of Mesopotamian civilizations 

peace
-Alex