Theme 4: A Global Perspective – 4.1.3 Pattern of Trade

Welcome to your study guide for Pattern of Trade! If you have ever wondered why your smartphone was assembled in Asia, why your local supermarket stocks fruits from South America, or why the UK sells banking services all over the globe, you are already thinking about international trade patterns.

International trade can seem complex with all its charts and global flows, but do not worry if this feels a bit daunting at first. We will break everything down into bite-sized, step-by-step pieces to help you master this topic for your Edexcel A Level Economics exams (Paper 2 and Paper 3).

---

1. What Exactly is the "Pattern of Trade"?

When economists talk about the pattern of trade, they are looking at three fundamental questions about global exchanges:

• Composition (What is traded?): Are countries exporting raw materials (primary commodities), manufactured goods, or services?
• Direction (Who is trading with whom?): Which countries or regional partners are buying and selling to each other?
• Volume (How much is traded?): What is the total quantity and value of goods and services flowing across borders over time?

Memory Aid (CDV): Think of C-D-V — Composition, Direction, and Volume.

Key Classifications You Must Know

• Geographical Pattern of Trade: This describes the range of countries or geographical regions with which a nation trades (e.g., the UK trading with the European Union vs. the USA vs. Asia).
• Commodity Pattern of Trade: This describes the types of products being exchanged. Economists divide these mainly into:
    1. Trade in Goods (Merchandise Trade): Tangible products you can touch, such as cars, chemicals, machinery, and food. Globally, manufactured goods make up over 70% of all merchandise exports!
    2. Trade in Services: Intangible activities, such as financial services, consultancy, higher education, and overseas tourism.

Key Takeaway: The pattern of trade is simply a snapshot of what products are traded, who is trading them, and in what quantities.

---

2. The Four Key Drivers of Trade Patterns

The Edexcel specification highlights four main factors that cause international trade patterns to change over time. Let's look at each one in detail.

Factor 1: Comparative Advantage

A country has a comparative advantage when it can produce a good or service at a lower opportunity cost than another country. Countries specialize in producing what they are relatively most efficient at, and then trade with others.

Crucial Exam Concept — Comparative Advantage is Dynamic (Not Fixed!):
A country's comparative advantage changes over time as it develops new technologies, improves worker skills, or invests in modern infrastructure.
• UK Example: In the 19th and early 20th centuries, the UK had a comparative advantage in heavy manufacturing (steel, textiles, shipbuilding). Over time, as labor costs rose and other nations industrialized, the UK shifted its comparative advantage toward high-value services like banking, law, and insurance.

Factor 2: The Impact of Emerging Economies

The rapid industrialization and growth of emerging market economies — notably the BRIC nations (Brazil, Russia, India, and China) — have dramatically altered global trade flows.

• Shift Towards Asia: As countries like China and India industrialized, global supply chains shifted toward Asia due to lower production and labor costs combined with massive scale.
• UK Trade Impact: Emerging economies have become crucial trading partners for developed nations. For example, China now accounts for over 7% of total UK imports.
• Resource Demand: Emerging economies require huge amounts of energy, minerals, and agricultural products, reshaping trade routes between South America, Africa, and Asia.

Factor 3: Growth of Trading Blocs and Bilateral Agreements

A trading bloc is a group of countries that agree to reduce or eliminate trade barriers (like tariffs and quotas) between themselves. Examples include the European Union (EU) and USMCA (United States-Mexico-Canada Agreement, formerly NAFTA).

Joining or leaving a trading bloc influences the pattern of trade in two distinct ways:

• Trade Creation (Good for efficiency): This occurs when trade switches from an expensive domestic producer to a lower-cost, more efficient producer within the trading bloc because tariffs have been removed.
• Trade Diversion (Loss of efficiency): This occurs when trade switches from a more efficient, lower-cost producer outside the bloc to a less efficient producer inside the bloc, simply because the outside producer faces high external tariffs while the inside producer faces zero tariffs.

Analogy: Imagine your favorite bakery across town sells bread for £2, but your neighborhood council places a £1 entry fee on anyone carrying bread from outside the neighborhood. You might switch to buying bread from a local neighbor for £2.50. You switched to a less efficient producer just to avoid the fee — that is trade diversion!

Factor 4: Changes in Relative Exchange Rates

Exchange rates determine the price of a country's exports to foreign buyers and the price of imports to domestic consumers.

Let's follow the step-by-step chain of reasoning for an appreciation (rise in value) of a currency:

1. The domestic currency strengthens against foreign currencies.
2. Domestic exports become relatively more expensive in foreign markets, reducing international price competitiveness.
3. Foreign imports become relatively cheaper for domestic buyers.
4. Over time, export volumes may fall and import volumes may rise, altering both the trade balance and the direction of trade flows.

Key Takeaway: Trade patterns shift due to changes in comparative advantage, the rise of emerging economies, the expansion of trading blocs (creation vs. diversion), and movements in relative exchange rates.

---

In Paper 2 and Paper 3, you are frequently asked to analyze data concerning the UK's trade position. Here are the core historical patterns to keep in mind:

• Shift from Commonwealth to Europe: Prior to the 1980s, a large portion of UK trade was conducted with Commonwealth nations (such as Australia, New Zealand, and Canada). Following the UK's entry into the European Economic Community (later the EU), trade redirected heavily toward European neighbors due to lower trade barriers and geographical proximity.
• Recent Partner Distribution (2020 Data):
    • Approximately 46% of UK trade was with the EU.
    • Approximately 26% of UK trade was with the USA.
• Deindustrialization: Over recent decades, the UK has run a persistent deficit in trade in goods (merchandise) while maintaining a significant surplus in trade in services.

---

Examiners consistently report that students mix up the Terms of Trade with the Balance of Trade. Make sure you know the difference!

1. The Terms of Trade (A Price Index Ratio)

The Terms of Trade (ToT) measures the relative price of a country's exports compared to its imports. It shows how many units of imports a country can buy with a single unit of exports.

The formula required by Edexcel is:

\(\text{Terms of Trade} = \left(\frac{\text{Index of Export Prices}}{\text{Index of Import Prices}}\right) \times 100\)

• If the index rises (e.g., from 100 to 110), the terms of trade have improved (export prices have risen faster than import prices).
• If the index falls (e.g., from 100 to 90), the terms of trade have deteriorated.

2. The Balance of Trade (A Value Calculation)

The Balance of Trade is simply the monetary value of exports minus the monetary value of imports over a given time period:

\(\text{Balance of Trade} = \text{Total Value of Exports} - \text{Total Value of Imports}\)

Quick Summary: Terms of trade = Prices. Balance of trade = Values (Price \(\times\) Quantity).

---

5. Examiner Pitfalls and How to Avoid Them

To secure top grades (Levels 3 and 4) in your data response and essay questions, watch out for these frequent mistakes identified in examiner reports:

Pitfall 1: "Data Lifting" without Economic Explanation
The Mistake: Simply copying numbers from the Source Booklet (e.g., "Imports from Vietnam rose by 10% in 2022").
The Fix: Always explain the underlying economic reason behind the data. (e.g., "The 10% increase in imports from Vietnam reflects a shift in comparative advantage, as lower labor costs in Southeast Asia make manufacturing assembly more cost-effective relative to domestic production.")

Pitfall 2: Static Thinking on Comparative Advantage
The Mistake: Assuming a country's comparative advantage is permanent.
The Fix: Emphasize that comparative advantage is dynamic. Mention how investment in human capital, automation, or infrastructure can help a country transition from primary goods to advanced technology or services.

Pitfall 3: Broken Chains of Reasoning
The Mistake: Jumping straight from "the exchange rate rose" to "trade patterns changed."
The Fix: Build step-by-step logical chains: Currency appreciates \(\implies\) export prices rise in foreign currency terms \(\implies\) exports become less price-competitive \(\implies\) quantity demanded of exports falls \(\implies\) trade flows and direction shift.

Pitfall 4: Generic Evaluation
The Mistake: Writing "It depends on the time lag" without any context.
The Fix: Apply evaluation directly to the specific country or market in the question. For example, explain why exchange rate changes take time to alter manufacturing trade due to long-term delivery contracts.

---

Quick Chapter Summary

• Pattern of Trade: Covers the composition, direction, and volume of goods and services exchanged between nations.
• 4 Main Influences: Dynamic comparative advantage, growth of emerging economies (e.g., BRIC / China >7% UK imports), trading bloc creation/diversion, and relative exchange rate shifts.
• UK Trends: Major historical shift from Commonwealth trade to the EU (~46% in 2020) and USA (~26% in 2020), alongside a shift towards service exports.
• Calculation Check: Terms of trade is \(\left(\frac{\text{Index of Export Prices}}{\text{Index of Import Prices}}\right) \times 100\) (price ratio), whereas the balance of trade is exports minus imports (value).