[International Trade] WEEK9(2)

Summary

Key Points

• The model shows that trade is only a modest contributor to wage inequality, countering the common misconception that it is the primary cause. 1:07
• International trade changes relative factor prices, leading to different earnings for labor and capital across nations. 2:36
• The Heckscher‑Ohlin framework assumes two countries, two goods, and two factors of production to simplify analysis. 2:53
• Comparative advantage arises from differences in a country’s factor endowments, such as labor and capital supplies. 9:25
• Good X is defined as labor‑intensive and Good Y as capital‑intensive, allowing the model to link factor abundance to export patterns. 9:55
• It further assumes both countries share identical production technologies, so factor price differences drive input choices. 12:50
• Constant returns to scale and perfect competition in product and factor markets ensure prices reflect supply and demand without market power. 17:11
• Factors are perfectly mobile within each country but immobile internationally, permitting domestic reallocation but preserving cross‑country wage gaps. 17:41
• Other simplifying assumptions include identical consumer preferences, no transportation costs or tariffs, full employment of resources, and balanced trade between the two nations. 20:17