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To identify the two characteristics of the city of Ur that show it has the unique features of a Mesopotamian civilization, we need to consider the key traits of Mesopotamian societies.
1. Remains of a city on land near the Tigris-Euphrates river system - Mesopotamian civilizations developed along the Tigris and Euphrates rivers due to the fertile land these rivers provided. Cities like Ur located near these rivers benefited from the irrigation and agricultural opportunities they offered.
2. Presence of clay tablets with cuneiform - Cuneiform script was one of the earliest writing systems used in ancient Mesopotamia. The presence of clay tablets with cuneiform writing in Ur indicates a sophisticated system of communication and record-keeping, which was a hallmark of Mesopotamian civilizations.
Therefore, the correct characteristics that demonstrate the unique features of a Mesopotamian civilization in the city of Ur are the remains of a city near the Tigris-Euphrates river system and the presence of clay tablets with cuneiform writing. These features align with the historical and cultural traits associated with Mesopotamian societies.
