What did city-states in Sumer have in common? O They shared the same laws. O They were centers of trade. O They were all ruled by one king. O They were home to millions of people.

Correct answer is They were centers of trade.

Explanation:

First option is not correct as until Hammurabi's Code (Old Babylonian Empire) there were no written laws in this area.

Second option is correct as all of this cities were large and important crossroads of trade, due to their position.

Third option is not correct as they all had different rulers.

Last option is also not correct as together all of them had less than a million inhabitants.

the cell goes through mitosis

explanation:

the correct answer that would best complete the given statement above would be option b. expanding civil services. diocletian and constantine paved the way for foreign invasion by dividing the empire, creating administrative bureaucracies and reorganizing the military, except for expanding civil services. hope this answer .

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explanation: