The answer is A. Root crops, including yams, sweet potatoes, and taro, became more common.
The root crops became more common, and practically the basic food source. This was due to the fact that the climate and soil on the Pacific islands were excellent for growing them, and of course for having a sustainable food source.
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Your question: Which rocky mountain state is directly north of Colorado?
Your answer: New Mexico is the rocky mountain state which is directly to the north of Colorado.
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Settlers who grew just enough crops to support likely lived in the North.
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