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If you're searching for a complete collection of case studies for the Global Economy Unit (Unit 4) of the IB Economics syllabus, you're in the right place. In this post, we’ll walk you through carefully selected case studies for each sub-topic, making your revision more structured and effective.
IB Economics real world examples (The Global Economy)
You may be wondering why real-world examples, also referred to as case studies, are so important in IB Economics. The truth is that to score highly, especially in Paper 1, it is not enough to rely on theory alone. To obtain a good score, it is crucial to support your answers with real-life examples. This will show the examiner that you not only know the theory but also understand it thoroughly and can demonstrate how it applies in real life.
Keep in mind that these are only examples of case studies you could explore. If you do choose to rely on these examples, it is important you research them in more depth in order to comprehensively embed them in your analysis and be able to discuss them.
4.1 Benefits of International Trade
Comparative advantage (and limitations)
- Taiwan – Semiconductors
- Advantage: Specialization allows Taiwan to produce the world’s fastest and cheapest microchips, boosting global IT efficiency.
- Limitation: Extreme specialization gives Taiwan disproportionate market power, which other nations see as unfair and risky.
- France – Wine and Cheese
- Advantage: Favorable climate and expertise let France efficiently produce high-quality wine and cheese, freeing resources from less efficient industries.
- Limitation: Comparative advantage theory ignores transport costs – in some cases, producing elsewhere may be more economical.
- Australia – Agriculture (e.g., Beef)
- Advantage: Vast land area allows efficient beef production, enabling trade with countries like China that specialize in rice.
- Limitation: Long transport distances raise costs, especially for perishable goods like raw meat, reducing efficiency in practice.
4.2 Types of Trade Protection + 4.3 Arguments for Trade Protection
Tariff
- In 2018, the U.S. imposed tariffs on imported steel.
- Benefits:
- Protected the domestic (though inefficient) steel industry.
- As a large economy, the U.S. faced limited retaliation from trading partners.
- Generated extra government revenue.
- Costs:
- Raised input costs for consumers of steel, such as carmakers and construction firms.
- Reduced export earnings for foreign producers.
- Benefits:
Quota
- In the 1980s, the U.S. imposed a quota on Japanese car imports.
- Benefits:
- Protected the struggling U.S. car industry.
- Encouraged investment in American auto firms, creating 8 new factories and around 100,000 jobs.
- Costs:
- Car prices rose by about 8%, costing U.S. consumers an extra $5 billion.
- Japanese carmakers responded by moving production to the U.S., which created jobs but also intensified competition for domestic firms.
- Benefits:
Subsidy
- The EU’s Common Agricultural Policy (CAP) provides large subsidies to farmers, mainly to support domestic food production and exports.
- Benefits:
- Keeps prices of staple foods lower for consumers.
- Encourages self-sufficiency and stabilizes farmers’ incomes.
- Costs:
- Very expensive for the EU budget (≈€55B/year, about a third of total EU spending).
- Criticised by countries like the U.S., which have retaliated with tariffs, leading to trade tensions.
- Benefits:
Administrative barriers
- A few years ago, China banned imports of goods destined for landfills or recycling.
- Benefits:
- Reduced domestic waste, improving environmental standards and public health.
- Costs:
- Western countries that previously shipped waste to China had to find alternative destinations, increasing logistical costs and environmental impacts elsewhere.
- Benefits:
4.4 Economic Integration
Free Trade Area
- The North American Free Trade Agreement (NAFTA), between Canada, the U.S., and Mexico, created a free trade area.
- Benefits:
- Increases trade flows between member countries.
- Allows goods like electronics and cars to be produced in Mexico at lower costs, increasing consumer surplus in the U.S. and Canada.
- Costs:
- Some U.S. businesses face stiffer competition, potentially raising unemployment in certain sectors.
- Can contribute to current account deficits in the U.S. due to higher imports.
- Benefits:
Customs union
- The South African Customs Union (SACU) includes Botswana, Eswatini, Lesotho, Namibia, and South Africa, allowing free trade within the union and a common external tariff.
- Benefits:
- Increases trade flows between member nations.
- Common import policies reduce outside competition, supporting domestic industries.
- Costs:
- Member states may have conflicting interests, making new policy decisions difficult.
- Tariffs on non-members raise prices of imports, reducing consumer surplus.
Common market
- Single Market Example: European Economic Area (EEA). The European Economic Area (EEA) includes all EU member states plus Norway, Iceland, and Liechtenstein, creating a single market.
- Benefits:
- Standardized regulations improve consumer welfare and market confidence.
- Greater confidence and stability have boosted foreign investment.
- Costs:
- Member states lose some control over their domestic markets.
- Economies become highly reliant on trade with other EEA members.
- Benefits:
Monetary union
- The Eurozone is composed of countries using the Euro (€) as their currency.
- Benefits:
- Enhances monetary stability across member states.
- Simplifies trade and transactions, e.g., Greek olive farmers can sell to German packaging firms without currency conversion.
- Costs:
- The European Central Bank makes monetary policy for all members, limiting national control.
- Countries in different economic situations, like Greece during its financial crisis, cannot independently print money, as it could create inflation risks for other members.
- Benefits:
4.5 Exchange Rates
Currency appreciation
- Between 1985 and 1995, the Japanese Yen (¥) tripled in value.
- Benefits:
- Increased purchasing power for Japanese consumers, improving living standards and real incomes when buying foreign goods.
- Costs:
- Exports became more expensive, reducing demand abroad, while imports increased, slowing GDP growth and contributing to a recession.
- Export-oriented firms like Toyota and Sony lost significant international sales.
- Investor speculation pushed the Yen higher, and the exchange rate remained overvalued despite a current account deficit.
- Benefits:
Currency depreciation
- In the late 1990s, the Argentine Peso depreciated rapidly.
- Potential Benefit:
- Cheaper exports could have boosted demand abroad, supporting economic growth.
- Costs:
- Imported inflation surged as foreign goods became more expensive.
- Servicing foreign-denominated loans became harder, contributing to financial instability and economic chaos.
- Potential Benefit:
Currency devaluation
- The US attempted to devalue its own currency in 1985, by getting its own, as well as other countries', central banks to sell their dollar reserves (named the Plaza Accord). This should have in theory helped exports and turn the US current account deficit into a surplus, which it did compared to Western countries. However, the US still had a trade deficit with Japan, as they had administrative barriers on imports, and the plan was reversed just 2 years later (named the Louvre Accord). It also led to Japan's currency appreciation, which led to detrimental effects for Japan's economy.
Fixed exchange rate
- In the years leading up to 1997, Thailand maintained a fixed exchange rate between the Baht and the U.S. Dollar.
- Benefits:
- Provided economic stability, encouraging investment.
- Supported rapid economic growth of over 9% per year in the preceding decade.
- Costs:
- Speculators tested the central bank’s dollar reserves, selling large amounts of Baht to force a devaluation.
- The bank depleted its reserves trying to maintain the peg, eventually abandoning the fixed rate.
- The resulting Baht collapse triggered the 1997 Asian financial crisis, spreading instability across the region.
- Benefits:
Managed vs floating exchange rate
- Denmark uses the Danish Krone (DKK) but manages it against the Euro rather than allowing a purely floating rate.
- Benefits:
- Provides stability for trade with Eurozone countries like Germany.
- Avoids the severe currency depreciation seen in neighboring Norway and Sweden, helping control import-driven inflation.
- Denmark’s strong economy and reserves allow it to resist speculative attacks, unlike Thailand in the 1990s.
- Costs:
- Loss of currency autonomy: if the Euro falls against other currencies (e.g., USD), the DKK also depreciates.
- Denmark cannot independently adjust monetary policy to respond to shocks outside the Eurozone.
- Benefits:
4.6 Balance of payments
Components of the balance of payments
- China has consistently run a trade surplus, exporting goods like electronics, machinery, and textiles while importing less in value.
- This surplus contributes positively to the current account and increases China’s foreign exchange reserves.
- A persistent surplus can lead to currency appreciation, making exports less competitive over time.
Interdependence between the accounts
- The U.S. runs a persistent current account deficit (imports > exports).
- To finance this deficit, the U.S. receives financial inflows via FDI, portfolio investment, and loans.
- The financial account surplus offsets the current account deficit, maintaining overall BoP equilibrium.
Relationship between the current account and the exchange rate (HL only)
- A country exporting more than it imports experiences higher demand for its currency.
- Domestic currency appreciates, making exports more expensive and imports cheaper.
- This can reduce the surplus in the long run.
- China historically ran trade surpluses, contributing to upward pressure on the Yuan (before managed exchange rate policies).
Relationship between the financial account and the exchange rate (HL only)
- Countries with managed exchange rates may use reserves to counter excessive appreciation or depreciation caused by financial account imbalances.
- The Swiss National Bank buys foreign currencies to prevent the Swiss Franc from appreciating too much.
The Marshall-Lerner condition and the J-curve effect (HL only)
- Thailand abandoned the Baht peg to the U.S. dollar after speculative attacks, causing a sharp depreciation of the Baht.
- Depreciation made exports (electronics, rice, textiles) cheaper abroad and imports more expensive domestically. The current account would improve only if the sum of export and import price elasticities > 1.
- Initially, the current account worsened because import contracts were pre-set and exporters could not immediately increase shipments. Over time, exports rose and imports fell, improving the current account and forming a J-shaped recovery.
- This demonstrates how currency depreciation can correct a deficit, but the time lag and elasticity of trade are crucial for effectiveness.
4.7 Sustainable Development
Relationship between sustainability and poverty
- Many rural households in India rely on kerosene for lighting, which is expensive, polluting, and limits productive activities after dark.
- Sustainability Initiative: Programs providing solar panels to low-income households.
- This reduces fuel costs, increasing disposable income. Enables longer study/work hours, improving education and income opportunities.
- Impact on Sustainability: Reduced reliance on fossil fuels, lowering local pollution and greenhouse gas emissions.
4.8 Measuring Development
The multidimensional nature of economic development
- Economic Dimension Income and wealth – Higher GDP per capita, better access to jobs, and increased consumption.
- Singapore’s rapid income growth since independence.
- Social Dimension Health and education: Longer life expectancy, lower infant mortality, higher literacy rates.
- Cuba’s strong healthcare and education systems improve human well-being despite moderate income.
- Political Dimension Freedom and governance: Democracy, rule of law, political stability, and participation.
- Scandinavian countries combine economic growth with strong political institutions and equality.
- Environmental Dimension Sustainability: Responsible use of resources and protection of the environment for future generations.
- Costa Rica invests in renewable energy and forest conservation while developing economically.
- Human Development Captured by indices like the Human Development Index (HDI), which combines income, education, and life expectancy.
- Hong Kong ranks high on HDI, showing that development is not just about income.
Possible relationship between economic growth and economic development
- Economic growth is an increase in real GDP or GDP per capita over time.
- Economic development is a broader concept, including improvements in living standards, health, education, and sustainability, not just income.
- Economic growth can support development by increasing government revenue for healthcare, education, and infrastructure.
- For example, China’s rapid GDP growth since 1980 allowed large reductions in poverty, better education, and improved health outcomes.
- Growth does not automatically lead to development if wealth is unequally distributed or if environmental degradation occurs.
- For example, Nigeria has a relatively high GDP from oil but low HDI due to poor health, education, and inequality.
4.9 Barriers to Economic Growth and/or Economic Development
Poverty traps/poverty cycles
- A poverty trap occurs when people are unable to escape poverty due to self-reinforcing factors.
- Low income → low savings → low investment → low productivity → continued poverty.
- Poverty cycles can persist across generations, keeping families trapped.
- Causes: Limited access to education, healthcare, and credit. Poor infrastructure and low technology adoption. Vulnerability to shocks like natural disasters or illness.
- Example: Rural subsistence farmers in sub-Saharan Africa often cannot afford fertilizers or irrigation, limiting crop yields, income, and future investment. Breaking the cycle often requires external intervention such as microfinance, education programs, or government subsidies.
Economic barriers
- Factors that prevent individuals, businesses, or countries from achieving economic growth or development. Types of Economic Barriers:
- Low income and savings: Limits ability to invest in education, health, or businesses.
- Lack of access to credit or financial services: Small businesses cannot expand, farmers cannot buy inputs.
- Poor infrastructure: Roads, electricity, and internet access are essential for trade and productivity.
- High taxation or tariffs: Can restrict business growth and access to foreign markets.
- Unemployment and underemployment: Limits income, reduces human capital development.
- For example many rural areas in sub-Saharan Africa face poor roads and electricity shortages, which limit market access and economic activity.
Political and social barriers
- Political barriers are government or institutional obstacles that restrict economic growth and development.
- Examples include corruption, political instability or conflict, and weak governance or legal systems.
- These barriers reduce investor confidence, slow infrastructure development, and limit access to public services.
- Social barriers are cultural or societal factors that limit participation in economic activities.
- Examples include gender inequality, discrimination or social exclusion, and low education and skill levels.
- These barriers reduce labor force efficiency, innovation, and social mobility.
- Countries facing political and social barriers often experience slower economic growth and persistent poverty cycles.
- Examples include South Sudan, where conflict and weak institutions hinder development, and Afghanistan, where restrictions on women limit workforce participation.
Significance of different barriers to economic growth and/or economic development
- Economic, political, and social barriers all hinder economic growth and development, but their significance can vary by country.
- Economic barriers such as low income, lack of access to credit, poor infrastructure, and high unemployment limit investment, productivity, and market access.
- Political barriers like corruption, weak governance, and conflict reduce investor confidence, slow infrastructure projects, and disrupt markets.
- Social barriers including gender inequality, discrimination, and low education or skills levels reduce human capital and labor productivity.
- The relative importance of each barrier depends on the country’s context; for example, conflict may be most significant in fragile states, while poor infrastructure may dominate in developing rural economies.
- Barriers often interact, reinforcing each other. For instance, low education (social) limits productivity (economic), while weak governance (political) prevents infrastructure investment (economic).
- Addressing these barriers is crucial for achieving sustainable economic growth and long-term development.
4.10 Economic growth and/or economic development strategies
Strengths and limitations of strategies for promoting economic growth and economic development
- After the Korean War, South Korea was a low-income country with poor infrastructure and low human capital.
- Strategies: Investment in education and healthcare, infrastructure development, technological innovation, and export-led growth.
- Strengths: Rapid GDP growth, reduced poverty, skilled workforce, and industrialization.
- Limitations: Uneven regional growth, vulnerability to global demand shocks, and occasional government inefficiencies.
Strengths and limitations of government intervention versus market-oriented approaches to achieving economic growth and economic development
- Strategies to promote economic growth and development include investment in infrastructure, education, healthcare, technology, trade liberalization, and government policies. Investment in infrastructure improves productivity, reduces costs, and attracts investment; for example, China’s Belt and Road Initiative boosted trade and growth in participating countries, but requires huge capital and long implementation times.
- Education and healthcare enhance human capital, increasing productivity and well-being; for instance, South Korea’s investment in universal education and healthcare helped transform it into a high-income economy, though benefits are long-term.
- Technological advancement and innovation boost efficiency and competitiveness; India’s IT sector growth shows how technology can drive economic growth, but unequal access may increase inequality.
- Trade liberalization expands markets, encourages efficiency, and attracts FDI; NAFTA increased trade and investment between the US, Canada, and Mexico, but some domestic industries faced increased competition and job losses.
- Government policies, such as subsidies, tax incentives, or monetary/fiscal interventions, can stimulate growth; for example, the EU’s Common Agricultural Policy subsidizes farmers to maintain production, but mismanagement or high costs can reduce effectiveness.
- Strategies are most effective when combined, addressing multiple dimensions of development, but each has limitations and potential unintended consequences.
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