Topic of paper: The Mesopotamian, Egyptian, Indus Valley, and Chinese civilizations were all river based.Using two or more of the variables of environment, settlement, technology, economy, society, and religion, pair up these four ancient civilizations into two groups.Write a 750-word essay about your comparision, describing each variable that you have identified and how it may be to determine which civilization pairs with which. Are there any variables are are particularly important when pairing these four civilizations.

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