Substitutability of Factors and Commodities
Trade in goods and services can to some extent be considered a substitute for factor movements. In the absence of trade barriers, even when factors are not mobile, there is a tendency toward factor price equalization. In the absence of barriers to factor mobility, commodity prices will move toward equalization, even if commodities may not freely move. However, complete substitution between factors of production and commodities is only theoretical, and will only be fully realized under the economic model called the Heckscher-Ohlin model, or the 2x2x2 model, wherein there are two-countries, two-commodities, and two factors of production. While the assumptions of that model are unlikely to hold true in reality, the model is still informative as to how prices of factors and commodities react as trade barriers are erected or removed.
Read more about this topic: International Factor Movements
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