What evidence has been found to support the theory that these ancient cities must have had a governing body?

- Written laws

- Architectures resembling town hall

Explanation:

One example of written laws that founded by Archeologists  was the Stele of Hammurabi's codex that found in 1901. It's a set of written laws that originated from Ancient Mesopotamia. The existence of law indicates that ancient society had a governing body that create legislations to maintain the order in society.

On top of that, a lot of ancients civilizations had some form of architectures that's designed to accommodate a lot of people with one podium in center. Those architectures is predicted to be used as a place where government officials communicate with the people about legislations.

abraham lincoln issued the preliminary emancipation proclamation on september 22nd, 1862. it stipulated that if the southern states did not cease their rebellion by january 1st, 1863, then proclamation would go into effect.

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