Why were Sumerian cities called city-states?

These first cities were like small, independent countries. They each had their own ruler and their own farmland to provide food. For this reason, they are called city-states. Hope this helps!

Explanation:

These first cities were like small, independent countries. They each had their own ruler and their own farmland to provide food. For this reason, they are called city-states.

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first, the romans stayed isolated because they had to defend their own territories from neighboring cities that were harassing them, like the etruscans. second, once the romans managed to defeat their neighbors, and started to expand their territory, they started to build roads and bridges. finally, now that the romans have covered their territory with roads functioning as highways, they could mobilize their legions faster to assemble larger military units in a specific place

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