What Key Development Had to Occur Before Substantial Changes in Southwestern

question 13

Multiple Choice

What key development had to occur before substantial changes in southwestern life could occur?

• A) The Ice Age had to end.
• B) Elaborate canals had to be built.
• C) The League of the Iroquois had to be defeated.
• D) The Wooly Mammoth had to be eliminated.
• E) A more drought-resistant strain of maize had to be introduced.

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