Eygypts black land was caused by

According to www.historymuseum.ca, "In ancient times, the Egyptians called the desert the "red land", distinguishing it from the flood plain around the Nile River, called the "black land". These colors reflect the fact that the desert sands have a reddish hue and the land around the Nile turned black when the annual flood waters receded."

Explanation:

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the correct answer is individualism and exchange. at this stage, children begin to question the rules, because they can see that there is more than one side to them. different individuals have different viewpoints. they won't be able to reach this stage because of ignorance, a lack of ethics or personal biases. that is because people with that characteristiscs are not able to distinguish what is good or what is bad and they can't pursue their individual interests.