# Question

Suppose that the demand curve for wheat in each country is inelastic up to some “ choke” price p*— a price so high that nothing is bought— so that the demand curve is vertical at Q* at prices below p* and horizontal at p*. If p* and Q* vary across countries, what does the world’s demand curve look like? Discuss how the elasticity of demand varies with price along the world’s demand curve.

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