The four river valley civilizations were the Tigris & Euphrates Valleys, the Nile River Valley, the Indus River Valley, and the Yellow River Valley. Civilizations developed around rivers because their waters provided places to hunt and fish. Also, as the rivers flooded, the lands around them became fertile.
Answer: i think there were two groups that wanted freedom so they came up with simillier names
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The Presidential $1 Coin Act required that the cent, beginning in 2010, "shall bear an image emblematic of President Lincoln's preservation of the United States of America as a single and united country".
I know that it was cheap land so it would be A or D to my best judgement. Are you good at math?