Welcome to Trade and Globalisation!
Hello and welcome to one of the most exciting and dynamic topics in your A2 Economics course! In this chapter, we explore how economies across the planet are linked together. You will learn why nations trade with one another, how globalisation reshapes everyday life, what happens when countries build barriers to trade, and how international organisations manage global commerce.
Don't worry if international trade models or formulas seem a bit intimidating at first! We will break every single idea down into bite-sized, step-by-step concepts with real-world examples, handy memory aids, and quick review checks along the way.
---1. Understanding Globalisation
What is Globalisation?
Globalisation is the process of increasing economic, social, cultural, and technological interdependence and integration between countries across the globe. In economics, it refers mainly to the free movement of goods, services, capital, technology, and labour across national borders.
Think of globalisation like your local high street turning into a giant global marketplace: your phone was designed in California, assembled in Asia using rare minerals from Africa, and runs software written in Europe!
Key Drivers (Causes) of Globalisation
Why has globalisation accelerated so rapidly over the last few decades? You can remember the key drivers using the acronym T-I-C-E-S:
• T - Transport Improvements: Faster, cheaper air travel and the invention of containerisation (standardised shipping containers) drastically reduced the cost and time of moving goods across oceans.
• I - Information and Communication Technology (ICT): The internet, high-speed fibre optics, and mobile communications allow instant global financial transfers and remote working.
• C - Corporations (TNCs/MNCs): Transnational Corporations (companies that operate in multiple countries, such as Apple, Toyota, and Unilever) seek out cheaper production locations and new consumer markets worldwide.
• E - Economic Reforms: Many previously closed economies (such as China, India, and former Eastern Bloc countries) opened their borders to foreign investment and international trade.
• S - Shift towards Free Trade: Reductions in tariffs and trade barriers through global agreements and organisations like the World Trade Organisation (WTO).
Impacts of Globalisation
Globalisation creates both "winners" and "losers". Let's look at how it affects different economic agents:
1. Consumers:
• Benefits: Greater choice of goods and services, lower prices due to increased competition and lower foreign production costs, and higher quality innovation.
• Drawbacks: Loss of local cultural diversity (standardisation of global products) and vulnerability to global supply chain disruptions.
2. Workers:
• Benefits: Millions of jobs created in developing nations (lifting hundreds of millions out of extreme poverty in countries like China and Vietnam).
• Drawbacks: Structural unemployment in developed nations as manufacturing jobs move to low-wage economies (deindustrialisation); downward pressure on wages for low-skilled workers.
3. Producers / Firms:
• Benefits: Access to massive international markets, ability to exploit economies of scale, and cheaper overseas raw materials/labour.
• Drawbacks: Intense competition from lower-cost foreign rivals; small domestic firms may be driven out of business by massive multinational corporations.
4. The Environment:
• Drawbacks: Increased carbon emissions from international transport (food miles), resource depletion, and the risk of the "race to the bottom" (where firms move to countries with the weakest environmental and labour regulations to cut costs).
Key Takeaway: Globalisation
Quick Review: Globalisation links national economies through trade, capital, and technology. While it boosts economic growth, efficiency, and consumer choice, it also leads to structural unemployment in developed nations, inequality, and environmental degradation.
---2. Free Trade and Comparative Advantage
Why Do Nations Trade?
If the UK can produce food, why buy it from Spain or New Zealand? Nations trade because of the uneven distribution of factor endowments (land, labour, capital, and enterprise) and differences in productivity. Trade allows countries to specialise in producing what they are best at and exchange surpluses.
Absolute vs. Comparative Advantage
It is vital to distinguish between these two core economic concepts:
• Absolute Advantage: When a country can produce a good using fewer resources (or produce more output with the same resources) than another country.
• Comparative Advantage: When a country can produce a good at a lower opportunity cost (giving up less of another good) than another country.
Memory Trick: Absolute = All-out productivity (who makes the most). Comparative = Cost in terms of alternatives (who gives up the least).
Step-by-Step Numerical Example: Calculating Opportunity Cost
Let's look at two countries, Country A and Country B, each with identical resources, producing either Cars or Wheat.
Step 1: Look at the maximum output table
• Country A can produce: \(100\) Cars OR \(100\) tonnes of Wheat.
• Country B can produce: \(40\) Cars OR \(80\) tonnes of Wheat.
Who has the absolute advantage? Country A has the absolute advantage in both goods because \(100 > 40\) for cars, and \(100 > 80\) for wheat.
Step 2: Calculate the Opportunity Cost for each country
For Country A:
• Producing \(100\) Cars means giving up \(100\) Wheat \(\implies 1 \text{ Car} = \frac{100}{100} = 1 \text{ unit of Wheat}\).
• Producing \(100\) Wheat means giving up \(100\) Cars \(\implies 1 \text{ unit of Wheat} = 1 \text{ Car}\).
For Country B:
• Producing \(40\) Cars means giving up \(80\) Wheat \(\implies 1 \text{ Car} = \frac{80}{40} = 2 \text{ units of Wheat}\).
• Producing \(80\) Wheat means giving up \(40\) Cars \(\implies 1 \text{ unit of Wheat} = \frac{40}{80} = 0.5 \text{ Cars}\).
Step 3: Compare Opportunity Costs
• For Cars: Country A gives up \(1\) Wheat, while Country B gives up \(2\) Wheat. Country A has a lower opportunity cost (\(1 < 2\)), so Country A has a comparative advantage in Cars.
• For Wheat: Country B gives up \(0.5\) Cars, while Country A gives up \(1\) Car. Country B has a lower opportunity cost (\(0.5 < 1\)), so Country B has a comparative advantage in Wheat.
Step 4: The Gains from Trade
Even though Country A is better at making both goods in absolute terms, both countries will be richer if Country A specialises in Cars, Country B specialises in Wheat, and they trade at a mutually beneficial exchange rate (e.g. \(1 \text{ Car} = 1.5 \text{ units of Wheat}\)).
Assumptions and Limitations of Comparative Advantage
In the real world, the theory of comparative advantage relies on simplified assumptions that do not always hold:
• Transport Costs: If the cost of shipping goods is too high, it erodes the comparative advantage.
• Constant Returns to Scale: The model assumes costs stay constant. In reality, increasing production can cause diminishing returns or diseconomies of scale.
• Homogeneous Products: Goods are assumed to be identical, but brand loyalty and product differentiation exist in real markets.
• Factor Immobility: Workers cannot always switch easily between industries (e.g. a car factory worker cannot instantly become a wheat farmer), causing structural unemployment.
• Trade Barriers: Tariffs, quotas, and political conflicts often restrict free trade flows.
Key Takeaway: Comparative Advantage
Quick Review: Trade is driven by comparative advantage (lower opportunity cost), not absolute advantage. By specialising in goods with the lowest opportunity cost, global output expands and both nations can consume beyond their domestic Production Possibility Frontiers (PPFs).
---3. The Terms of Trade (TOT)
Definition and Formula
The Terms of Trade (TOT) measures the relative price of a country's exports compared to its imports. It shows how many imports a country can buy with a given volume of exports.
The formula for calculating the Terms of Trade index is:
\( \text{Terms of Trade Index} = \left( \frac{\text{Index of Average Export Prices}}{\text{Index of Average Import Prices}} \right) \times 100 \)
Improvement vs Deterioration in the Terms of Trade
• An "Improvement" (Increase in TOT): The index rises (e.g. from \(100\) to \(110\)). This means export prices have risen faster than import prices. The country can now purchase more imports for the same quantity of exports.
• A "Deterioration" (Decrease in TOT): The index falls (e.g. from \(100\) to \(90\)). Import prices have risen relative to export prices. The country must sell more exports to buy the same volume of imports.
Factors Influencing the Terms of Trade
• Exchange Rate Changes: An appreciation of the currency makes exports more expensive in foreign currency terms and imports cheaper, improving the TOT.
• Relative Inflation Rates: Higher domestic inflation raises export prices relative to imports, leading to a numerical improvement in the TOT.
• World Commodity Prices: Developing nations that export raw commodities (e.g. copper, coffee) experience big swings in their TOT when global commodity prices rise or fall.
• Tariffs and Protectionism: Tariffs on imports can influence relative import prices.
Evaluating Changes in the Terms of Trade: A Common Student Trap!
Watch out! An "improvement" in the Terms of Trade is not always good news for the wider economy. Why?
If export prices rise significantly, foreign buyers may switch to cheaper competitors (if export demand is price elastic). As a result, export revenue falls, the current account deficit worsens, and domestic output may fall.
The Prebisch-Singer Hypothesis: This long-run economic theory suggests that developing countries exporting primary commodities face a secular (long-term) deterioration in their Terms of Trade because manufactured goods have a higher income elasticity of demand (\(YED > 1\)) than primary commodities (\(YED < 1\)).
---4. Protectionism and Trade Barriers
What is Protectionism?
Protectionism refers to government policies and actions designed to restrict foreign imports to protect domestic industries and employment from overseas competition.
Arguments FOR Protectionism
• Infant Industry Argument: Protecting new, developing domestic industries from established foreign giants until they grow large enough to achieve economies of scale.
• Protecting Domestic Employment: Shielding domestic jobs from low-wage foreign competition.
• Anti-Dumping: Preventing foreign firms from dumping (selling goods abroad below their cost of production or home market price to destroy domestic competitors).
• Strategic / National Security Reasons: Maintaining domestic production of essential goods (such as food, defence, pharmaceuticals, and energy) during global crises or war.
• Correcting a Trade Deficit: Reducing import spending to improve the Current Account balance.
Methods of Protectionism (Trade Barriers)
1. Tariffs (Customs Duties): A tax placed directly on imported goods to make them more expensive than domestic alternatives.
2. Quotas: A physical limit placed on the quantity of a specific good that can enter a country over a given time period.
3. Domestic Subsidies: Financial grants given by the government to domestic producers to lower their production costs, making them more competitive against imports.
4. Non-Tariff / Administrative Barriers: Excessive bureaucratic red tape, strict safety/environmental regulations, or deliberate customs delays designed to discourage imports.
5. Embargoes: A complete legal ban on trade with a specific nation (usually for political or diplomatic reasons).
Economic Analysis of a Tariff (Step-by-Step Breakdown)
When a government imposes a tariff on an imported good:
1. Price Rises: The domestic price of the good rises from the world price \(P_w\) to the higher tariff price \(P_w + \text{Tariff}\).
2. Domestic Consumption Falls: Because the price is higher, domestic consumers demand fewer units.
3. Domestic Production Rises: Domestic producers find it profitable to expand production at the higher price.
4. Imports Contract: The gap between domestic consumption and domestic production narrows, so imports shrink.
5. Government Gains Revenue: The government collects tax revenue equal to: \( \text{Tariff per unit} \times \text{Volume of Imports} \).
6. Deadweight Welfare Loss: Consumer surplus is lost. Part goes to domestic producer surplus and part to government revenue, but two areas represent pure economic inefficiency (welfare loss due to overproduction by inefficient domestic firms and lost consumer utility).
Arguments AGAINST Protectionism (Costs and Drawbacks)
• Risk of Retaliation: If Country A places tariffs on Country B, Country B will retaliate with tariffs of its own, leading to a destructive trade war.
• Higher Prices for Consumers: Tariffs act as a regressive tax, reducing real incomes and living standards.
• Loss of Economic Efficiency: Protects inefficient domestic firms, reducing their incentive to innovate and cut costs.
• Cost-Push Inflation: Tariffs on imported raw materials (e.g. steel) raise production costs for other domestic manufacturing industries.
Key Takeaway: Protectionism
Quick Review: Protectionism uses tariffs, quotas, and subsidies to shield domestic industries. While it protects certain jobs and infant industries in the short run, it leads to deadweight welfare losses, higher consumer prices, inefficiency, and retaliatory trade disputes.
---5. Trading Blocs and the World Trade Organisation (WTO)
Types of Regional Trading Blocs
A trading bloc is a group of countries that agree to reduce or eliminate trade barriers between themselves. There are four main levels of economic integration, ranked from least to most integrated:
1. Free Trade Area (FTA):
Member countries eliminate tariffs and quotas on trade between themselves, but each member maintains its own independent external tariffs against non-member countries. (Example: USMCA, formerly NAFTA).
2. Customs Union:
Members eliminate internal tariffs between themselves AND agree on a Common External Tariff (CET) on goods imported from non-member countries. (Example: The EU Customs Union, MERCOSUR).
3. Single / Common Market:
A customs union that also allows the free movement of all four factors of production (goods, services, capital, and labour) across borders, along with harmonised product regulations. (Example: The EU Single Market).
4. Monetary Union:
A single market that adopts a single shared currency and a single central bank setting one common monetary policy and interest rate. (Example: The Eurozone with the European Central Bank).
Trade Creation vs Trade Diversion (Jacob Viner's Theory)
When countries join a customs union, two distinct economic effects occur:
• Trade Creation (Positive): Trade shifts from a high-cost domestic producer to a low-cost producer within the trading bloc because tariffs between members are removed. This improves economic efficiency and consumer welfare.
• Trade Diversion (Negative): Trade shifts from a low-cost, efficient producer outside the bloc to a higher-cost, less efficient producer inside the bloc because of the Common External Tariff. This reduces global allocative efficiency.
The Role of the World Trade Organisation (WTO)
The WTO is the international body responsible for regulating global trade rules between nations. Its key roles include:
• Promoting trade liberalisation by organising rounds of trade negotiations to lower global tariffs and eliminate non-tariff barriers.
• Administering and enforcing international trade agreements.
• Operating a dispute settlement mechanism to resolve trade disagreements peacefully.
• Upholding non-discrimination principles, such as the Most Favoured Nation (MFN) rule (treating all WTO trading partners equally).
Challenges and Criticisms of the WTO
• Slow Decision-Making: Reaching consensus among all \(160+\) member countries is extremely difficult (e.g. the long-stalled Doha Round negotiations).
• Developed vs Developing World Conflict: Developing nations argue that developed nations continue to heavily subsidise their own agriculture while demanding that developing nations open their markets to industrial imports.
• Rise of Regional Bilateral Blocs: Countries increasingly bypass the WTO by signing regional trade agreements (RTAs), which undermines true multilateralism.
Chapter Summary & Revision Checklist
Before moving on to the next chapter, check that you can confidently:
• Define globalisation and explain its main drivers and impacts on different economic groups.
• Distinguish between absolute and comparative advantage and calculate opportunity costs from production tables.
• State the Terms of Trade formula and evaluate the impact of an improvement or deterioration.
• Explain the arguments for and against protectionism and trace the welfare effects of a tariff.
• Describe the four stages of economic integration (FTA \(\to\) Customs Union \(\to\) Single Market \(\to\) Monetary Union) and contrast trade creation with trade diversion.
• Explain the core role and key criticisms of the World Trade Organisation (WTO).