(A) State the Heckscher-Ohlin Theorem

Essay

(a) State the Heckscher-Ohlin theorem. Then, in the context of a 2x2x2 model and using the "price definition" of relative factor abundance, illustrate and explain how this theorem is obtained.
(b) Continuing with the "price definition" of relative factor abundance in the 2x2x2 context, carefully explain what happens (and why) to the relative factor price difference between the two countries as the countries move from autarky to free trade.