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ankahukuk ankahukuk
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6 years ago
Which of the following explains why civilizations on the scale of those of the Aztecs and Incas failed to emerge in the area that would become the United States?
 
  A) Volcanic eruptions occurred frequently.
  B) There were no rivers to support irrigation.
  C) Most of the land was uninhabitable.
  D) Agriculture was not as fully developed.
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OkaztleOkaztle
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