Question

security concerns: the construction of walls highlighted the sumerians increasing concerns about security and the desire to safeguard their communities.

unique political landscape:
within the walled city - states, a distinctive political landscape emerged, shaping the course of sumerian civilization.

city - states and governance: sumeria comprised twelve distinct city - states, each with its own ruler and government.

conflict and cooperation: while city - states often engaged in conflicts, periods of cooperation and alliances fostered the exchange of ideas and cultural development.

what were the twelve regions of sumeria, each with their own government, called?
countries
kingdoms
city states

Explanation:

The text states that Sumeria comprised twelve distinct city - states, each with its own ruler and government.

Answer:

C. city states