List the features of the most ancient civilizations of Mesopotamia.

the emergence of the state (these were city-states that arose around the temples); the first civilization was the Sumerian – their origin and to which linguistic family their language belongs is still not known; the inhabitants of Mesopotamia were engaged in irrigation agriculture; here the emergence of writing in the form of cuneiform; the first poems were written in Sumer; the continuity of the civilizations of Mesopotamia, the laws of Hammurabi, which operated in the region for one and a half thousand years.

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