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.