Ch 9 Mankiw - International Trade

Chapter 9: Application - International Trade

Introduction to International Trade

  • Check labels on clothes; many are foreign-made.

  • A century ago, textiles and clothing were major U.S. industries.

  • Competition from foreign producers with low costs leads to factory shutdowns and worker layoffs in the U.S.

  • Most textiles consumed in the U.S. are now imported.

  • Key Questions:

    • How does international trade affect economic well-being?

    • Who gains and loses from free trade?

    • How do the gains compare to the losses?

9-1 Determinants of Trade

9-1a Equilibrium Without Trade

  • Isoland's textile market is closed to international trade.

  • Domestic price adjusts based on supply and demand:

    • Price balances quantity supplied and demanded.

    • Consumer and producer surplus calculated to determine total benefits in market without trade.

9-1b World Price and Comparative Advantage

  • Isolandian economists evaluate potential trade impacts:

    • Compare domestic and world textile prices.

    • If world price > domestic price, Isoland exports textiles.

    • If world price < domestic price, Isoland imports textiles.

    • Domestic price reflects opportunity cost, indicating competitive advantage.

9-2 Winners and Losers from Trade

9-2a Gains and Losses of an Exporting Country

  • Small economy assumption:

    • Isoland actions have minimal effect on world prices; operates as price taker.

  • As domestic equilibrium price rises to world price:

    • Producers benefit (increased producer surplus) and consumers lose (decreased consumer surplus).

    • Total surplus increases, indicating overall economic gain from trade.

9-2b Gains and Losses of an Importing Country

  • If domestic price > world price, free trade leads to reduced domestic prices:

    • Consumers benefit (consumer surplus increases), producers lose (producer surplus decreases).

    • Total surplus increases indicates overall gain.

9-3 Trade Policy Considerations

9-3a Job and National Security Arguments

  • Arguments for protectionism focus on job preservation.

  • National security concerns lead to calls for protecting strategic industries.

  • Critics argue trade can create new jobs in industries with comparative advantage despite job losses.

9-3b Unfair Competition Arguments

  • Claims of unfair foreign competition due to subsidies and different regulations.

  • Economists argue that consumers still benefit from lower prices, even if producers lose.

9-3c Infant Industry and Protection Argument

  • New industries argue for protection to develop, but government determination of successful businesses is problematic.

9-3d Benefits of Free Trade

  • Free trade examples:

    • Increases variety of goods.

    • Lowers costs through economies of scale.

    • Enhances competition and stimulates innovation.

    • Facilitates technological transfers among nations.

9-4 Conclusion

  • Americans overwhelmed by concerns around globalization despite economic evidence supporting trade benefits.

  • Theories predicting outcomes of changes in trade policies:

    • Free trade leads to efficient production allocation and higher living standards.

    • Opening markets generally raises economic welfare despite potential individual losses.

Key Takeaways

  • Domestic prices provide insights into a nation's comparative advantage.

  • Trade impacts lead to consequences on producer and consumer surplus, ultimately affecting total surplus.

  • Arguments for restricting trade may be valid but often do not outweigh benefits of free trade.

Key Concepts

  • World Price: The prevailing price of goods in international markets.

  • Tariff: A tax on imports affecting domestic prices and trade quantities.