Comparative Advantage & Trade

Comparative Advantage

Free trade can allow countries to specialise in the goods they are most efficient at producing. Trade means that they can buy some goods from other countries, rather than producing them themselves.

Opportunity cost of production

If a country produces sugar, it has an opportunity cost of production.
The labour and capital used to make sugar cannot be used to make wheat at the same time.
- E.g. if Brazil can produce a lot of sugar cane per acre but not much wheat, and the US can produce a lot of wheat but not sugar cane, then the US has a lower opportunity cost of producing wheat than Brazil.
This can be shown using production possibility frontiers (PPFs).

Comparative advantage

The US has a comparative advantage in producing wheat.
Brazil has a comparative advantage in producing sugar cane.
If both countries could specialise in producing the goods they had a comparative advantage in, then:
- The total world output of goods will rise.
- Brazil and the US can trade wheat for sugar cane, and they both benefit.
Think of comparative advantage as what a country is least bad at - they all have to produce something!

Absolute advantage

A country has an absolute advantage in producing a good over another country if it uses fewer resources to produce that good.
- E.g. if Saudi Arabia can produce corn and oil more efficiently than the US, but can only produce 100 barrels of oil or 25 bushels of corn, the opportunity cost for Saudi of producing one barrel of oil is the loss of 0.25 bushels of corn.
If the US lost a bushel of corn by producing one barrel of oil, then the US has a comparative, but not absolute advantage in corn.

Costs of international trade

Negative externalities such as pollution from freight.
Risk of structural/regional unemployment because employers relocate.
While international trade may benefit skilled workers, it can be bad for low-skilled workers.
Low-skilled workers in developed countries compete against extremely low wage workers worldwide, which is unsustainable.

Benefits of International Trade

Free trade is defined as “the free movement of goods and services cross-border between countries with no attempt from government to unfairly restrict imports from, or exports to, other countries.”

Improved allocative efficiency

Free trade improves allocative efficiency.
Free trade improves the efficiency of resource allocation because countries produce in sectors they are better suited to, rather than all goods and services.
The more efficient use of resources leads to higher productivity and increasing total domestic output of goods and services.

Higher global output

Comparative advantage theory states that, if countries specialise in goods and services, have a lower opportunity cost of producing than other countries, and engage in free trade, they have the possibility of achieving an allocation of resources outside their initial PPF.

Greater competition and choice

Free trade causes increased competition, which will lead to cheaper prices and higher consumer surplus.
The reduction in prices increases real incomes, increases purchasing power and allows more goods and services to be bought. So this increases standard of living.
Free trade brings down cost-push inflationary pressure.
Free trade increases choice. Free trade allows countries to consume bananas even if they don’t have the climate for it.

Economies of scale

Firms and countries can specialise in the production of a small range of good and services, and trade them with other countries.
Because firms can focus on producing a few goods and services, there is scope for more economies of scale, lower LRAC, lower prices, higher consumer surplus and increased demand for goods.

1Microeconomics

1.1Competitive Markets: Demand & Suply

1.1.1Markets & Demand

1.1.2Diminishing Marginal Returns

1.1.3Supply

1.1.4Market Equilibrium

1.1.5Price Mechanism

1.1.6Consumer & Producer Surplus

1.1.7IB Multiple Choice - Demand

1.1.8IB Multiple Choice - Supply

1.2Elasticity

1.2.1Elasticities of Demand

1.2.2Factors Affecting Price Elasticity of Demand

1.2.3Elasticity of Supply

1.2.4Price Elasticity of Supply

1.2.5IB Multiple Choice - Price Elasticity of Demand

1.2.6IB Multiple Choice - Price Elasticity of Supply

1.2.7IB Multiple Choice - Other Elasticities

1.3Government Intervention

1.3.1Indirect Taxes & Subsidies

1.3.2Application Question - Taxing Prices or Quantities

1.3.3Subsidies & Price Controls

1.3.4Deadweight Loss & Government Intervention

1.3.5Elasticity & Tax Incidence

1.3.6IB Multiple Choice - Government Intervention

1.4Market Failure

1.4.1Types of Market Failure

1.4.2Introduction to Externalities

1.4.3Negative Externalities

1.4.4Policy for Negative Externalities

1.4.5Positive Externalities

1.4.6The Deadweight Welfare Loss of Externalities

1.4.7Case Study - The Externalities of Education

1.4.8Public Goods & the Free-Rider Problem

1.4.9Asymmetric Information

1.4.10End of Topic Test - Market Failure

1.4.11Application Questions - Market Failure

1.5HL: Theory of the Firm & Market Structures

1.5.1Theory of the Firm & Market Structures

2Macroeconomics

2.1The Level of Overall Economic Activity

2.1.1The Circular Flow of Income

2.1.2Defining GDP

2.1.3Limitations of GDP

2.1.4IB Multiple Choice - Economic Indicators

2.1.5Business Cycles

2.1.6Output Gaps

2.2Aggregate Demand & Aggregate Supply

2.2.1The Aggregate Demand Curve

2.2.2Components of Aggregate Demand

2.2.3Shape of the Aggregate Demand Curve

2.2.4Shifts in Aggregate Demand

2.2.5IB Multiple Choice - Aggregate Demand

2.2.6Short & Long-Run Aggregate Supply

2.2.7Alternative Models of LRAS

2.2.8Equilibrium in the AD-AS Model

2.2.9Output Gaps & the AD-AS Model

2.3Macroeconomic Objectives

2.3.1Introduction to Unemployment

2.3.2Limitations of Unemployment

2.3.3Types of Unemployment

2.3.4Causes & Impact of Unemployment

2.3.5Defining Inflation

2.3.6Measuring Inflation

2.3.7Use of Index Numbers

2.3.8The Consumer Price Index

2.3.9Consequences of Inflation

2.3.10Causes of Inflation

2.3.11Inflation & Unemployment Tradeoff

2.3.12The Short-Run Phillips Curve

2.3.13The Long-Run Phillips Curve

2.4Economic Growth, Poverty & Inequality

2.4.1Measuring Economic Growth

2.4.2Determinants of Productivity

2.4.3Economic Growth & Productivity

2.4.4Absolute & Relative Poverty

2.4.5Inequality

2.4.6Inequality 2

2.4.7Lorenz Curve

2.4.8Government Policy on Poverty

2.4.9End of Topic Test - Poverty & Inequality

2.4.10Application - Inequality & Poverty

2.5Fiscal Policy

2.5.1Introduction to Fiscal Policy

2.5.2Fiscal Policy and AD-AS Model

2.5.3Fiscal Policy Lags

2.5.4Automatic Stabilizers

2.5.5IB Multiple Choice - Fiscal Policy

2.6Monetary Policy

2.6.1Objectives of Monetary Policy

2.6.2Monetary Policy Implementation

2.6.3Monetary Policy & AD-AS Model

2.6.4Monetary Policy Lags & Pitfalls

2.7Supply-Side Policies

2.7.1Supply-Side Policies

2.7.2Supply-Side Policies 2

3The Global Economy

3.1International Trade

3.1.1Globalisation

3.1.2Globalisation for LEDCs

3.1.3Globalisation for MEDCs

3.1.4Comparative Advantage & Trade

3.1.5Protectionism

3.1.6Arguments for Protectionism

3.1.7Arguments Against Protectionism

3.1.8End of Topic Test - Globalisation & Trade

3.1.9Case Study - Globalisation & Trade

3.2Exchange Rates

3.2.1Floating Exchange Rates

3.2.2Fixed Exchange Rate

3.2.3Effect of a Stronger & Weaker Dollar

3.3The Balance of Payments

3.3.1Balance of Payments

3.3.2Balance of Payments 2

3.3.3FDI & Reducing a BoP Deficit

3.4Economic Integration

3.4.1Customs Unions & WTO

3.4.2Merged Currency

3.5Terms of Trade

3.5.1Absolute & Comparative Advantage

3.5.2Gains from Trade

3.5.3Terms of Trade

3.5.4IB Multiple Choice - Comparative Advantage & Trade

3.6Economic Development

3.6.1Factors Influencing Growth & Development

3.6.2International Institutions

3.6.3Measures of Development

3.6.4Barriers to Development

3.6.5Case Study - The Bottom Billion

3.6.6End of Topic Test - Emerging & Developing

3.7The Role of Domestic & International Factors

3.7.1Interventionist Strategies

3.7.2Development Strategies

3.7.3Development Promotion Policies

3.7.4End of Topic Test - Growth & Global Development

3.7.5Application Questions -Growth & Global Development

3.8The Role of International Trade

3.8.1International Institutions

3.8.2End of Topic Test - Globalisation & Trade

3.9The Role of Foreign Aid

3.9.1Aid

3.9.2Limitations of Aid

3.9.3Support for Aid

3.9.4Application Questions - Developing Countries

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