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.

Question

Quizplus · Accepted Answer

Agriculture was not as fully developed in the area that would become the United States compared to the Aztec and Inca civilizations. The domestication of crops and animals was not as advanced, and the lack of large indigenous mammals for domestication limited the development of agriculture.

Which of the Following Explains Why Civilizations on the Scale