This is an essay to show the rigorous connection between the neoclassical theory of trade, i.e. the Heckscher-Ohlin model in the context of General Equilibrium conditions, and the real exchange rate as determined by local and foreign prices in a common currency, i.e. the Purchasing Power Parity...

Neoclassical trade theory is largely based on the Heckscher-Ohlin (H-O) theorem. This proposition has survived all criticisms for many decades and it is still the basis for orthodox free-market trade policies. The theorem has been tested by various methodologies under different scenarios. Still,...