<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>
It's number c that's the best answer
One way the american foreign policy was shaped is The Korean War. For the first time, Americans went into battle to implement containment.<span> </span>
Static societies can not benefit from cultural blending because they are not open to change. Such societies also are not open to new ideas.
It is beleived that the Arab pennisula was a sphere of scientific inventions. This got lost when the societies a new phase of closing to themselves. This has led to some scholars postulating that the arab pennisular stopped developing when they stopped learning from others.