i think the answer is bonn
Well those civilizations river valley all for farming in summer they called did irrigation. they are the same too cause it helped for trade transportation most for farming it helped for bathing and food
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A good argument for it is that it created peace. It literally ended an almost 7 year war. A downside is that it created a line down the middle of the US which caused people to fear crossing it. Everyone stayed where they were and never explored.
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Answer: A
Explanation: the weather was very hot there. Average temps were 110 degrees.