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Principles of Micro
Economic History of the Soviet Union
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Yams, a man’s crop? (Optional)
» Practice Questions
1. Which of the following is a reason yams are not traded internationally as much as other crops?
a. Yams are grown in West Africa. Their poor infrastructure makes exporting more difficult.
b. Yams are easily stored for long periods, so farmers will keep extra yam crops as a form of “insurance.”
c. Both a. and b.
Copyright 2012 - Tyler Cowen and Alex Tabarrok