About when did city states develop in sumer ( in b. c.e )

When multiple states were conquered which were far from each other, to make control effective, the Sumerian city- states were developed.

Explanation:

Due to lack of transportation and technologies at that time, it was challenging to run a larger empire. Due to the larger area, the control was limited to a limited area, especially cities.

Leaders like Sargon of Akkad were able to conquer multiple city states. Also, they gathered multiple bureaucracies and used them to administer the conquered city states. Thus, in such way the city states started to develop in Summer.

no , per capita income is not a true measure of the development because: -it only tells us about average income not how income is distributed among the people.it only give us an idea of the economic aspect.it is only at the qualitative basis.moreover, income is not only the way of development other factors are also as much as important as income.

answer; analytical,creative and practical;