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<span>Muslim armies left Spanish land and crops in ruins...
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<span>A)availability of railroads to transport crops
</span>Availability of railroads to transport crops <span>was not a factor in making cotton a risky crop to grow, even if such availability makes easier to gain from the crops, the cotton was a risky crop because it is very delicate and environmental factors such as drought or insect infestation could easily kill the plant, making the investment worthless.</span>
Finance is the correct answer 100%
The Cenozoic spans only about 65 million years, The Cenozoic is sometimes called the Age of Mammals, because the largest land animals have been mammals during that time.