Pearson Edexcel International GCSE Economics: Trading blocs, WTO, trade patterns (4EC1) – Revision Notes

These notes condense statements 2.2.2 d), e) and f) of the Pearson Edexcel International GCSE Economics (4EC1) specification, Issue 3, for Paper 2: Macroeconomics and the Global Economy. For full explanations read the study guide, then test yourself with the practice questions. The course hub, the printable checklist and the free diagnostics help you plan. Tariff, quota and subsidy diagrams are in a different unit. All figures here are invented.

Definitions to learn

Term	Definition
Trading bloc	A group of countries that agree to reduce or remove trade barriers between themselves
Free-trade area	Bloc with no barriers between members; each member sets its own barriers on outsiders
Customs union	Free trade between members plus one common tariff on outsiders
Common market	Customs union plus free movement of labour and capital
Trade creation	Buying from a lower-cost partner instead of a higher-cost home producer
Trade diversion	Buying from a higher-cost partner instead of a lower-cost outsider
Non-member	A country outside the bloc, facing the external barriers
WTO	International organisation, set up in 1995, that sets rules for trade and settles disputes between members
Primary product	A farm good, mineral or fuel, sold with little processing
Trade pattern	What a country exports and imports, and with whom

Examples of blocs to quote

Bloc	Type to attach
European Union	Customs union and single market (some members share a currency)
USMCA	Free-trade agreement
ASEAN	Group with a free-trade area
Mercosur	Customs union
African Continental Free Trade Area	Free-trade area

Memberships change. Use the current facts in your course materials.

Impact of a bloc in one table

	Members	Non-members
Prices	Fall on partners’ goods	Their goods become dearer inside the bloc
Sales	Rise for efficient exporters; fall for weak home firms	Fall, if partners now win the business
Jobs	Gained in competitive firms; lost in weak ones	Lost in export firms that lose sales
Costs	Larger market allows lower average cost	Smaller market, higher average cost
Investment	Outside firms may build inside the bloc	Less investment attracted
Policy	Less freedom to set own barriers	May retaliate or join another bloc

Method in steps: trade creation or diversion

1. Work out each supplier’s price with tariff before the bloc.
2. Find the cheapest source before the bloc.
3. Remove the tariff on partners and recompute.
4. If a partner replaces a home producer, it is creation.
5. If a partner replaces a cheaper outsider, it is diversion.
6. Quantity of units times the price gap gives the saving to buyers.

Worked reminders

Creation. Home price 80, partner price 62, tariff 30%. Before: 62 × 1.30 = 80.6, so buy at home. After: 62. Saving per unit = 18, which is 22.5% of 80. On 5,000 units: 90,000.

Diversion. Tariff 20%. Partner 50, outsider 46. Before: outsider 46 × 1.20 = 55.2. After: partner 50. Buyers save 5.2 per unit (9.4%). Real cost rises 4 per unit. On 10,000 units, buyers save 52,000 but the government loses 92,000 of revenue, so the net change is −40,000.

Outsider matching. Highest price outsider can charge before tariff = 50 ÷ 1.20 = 41.67, a cut of 9.4% from 46.

Economies of scale. Average cost = fixed cost ÷ output + variable cost. With 600,000 fixed and 30 variable: 20,000 units gives 60; 50,000 units gives 42, a fall of 30%.

The WTO: roles and actions

• Negotiates lower trade barriers; deals become binding rules.
• Promotes equal treatment of members (blocs are an exception).
• Settles disputes: a panel rules on a complaint.
• Allows retaliation of equal value if a loser does not comply.
• Monitors members’ policies through regular reviews.
• Supports developing countries with training and longer time to adjust.
• Allows duties on dumped goods where dumping is shown.

Evaluation points: slow talks, costly cases for poor countries, weak enforcement against large economies, tension with blocs.

Dispute arithmetic. Exports fall from 800 to 680 million. Loss = 120 million. Percentage fall = 120 ÷ 800 = 15%. Authorised retaliation is limited to about the same value.

Trade patterns

	Developed	Developing
Exports	Manufactures, machinery, services	Primary products, some low-skill manufactures
Imports	Manufactures, raw materials, fuel	Machinery, vehicles, technology, fuel
Spread	Wide range	Often few products
Partners	Mainly other developed countries	Often few partners
Earnings	Steadier	Volatile

Many developing countries now export more manufactures and trade more with each other.

Dependence. Exports 500 million, 62% coffee: 310 million. Price falls 20%, PED −0.5, so quantity rises 10%. Revenue = 0.80 × 1.10 = 0.88, a fall of 12%, or 37.2 million. Total exports fall 7.4%.

Income elasticity. Primary product YED 0.3, machinery YED 1.5, income up 10%: demand up 3% against 15%.

Chains of reasoning to learn

Why a bloc can help a member. Tariffs on partners removed, so partners’ prices fall, so buyers pay less and firms using imported inputs cut costs, so prices fall or profits rise, so living standards may rise. A bigger market also lets firms spread fixed costs, so average cost falls.

Why a bloc can harm a member. Weak home firms face cheaper partner goods, so sales fall, so some firms close and workers lose jobs. If the cheapest world supplier is outside, diversion raises the real cost of buying.

Why a bloc can harm a non-member. The external tariff stays on its goods while partners pay none, so its goods are dearer in the bloc, so it sells less, so its output and jobs fall. It may cut price, find new markets, join another bloc or retaliate, and retaliation can hurt its own consumers.

Why developing countries can struggle in trade. Few exports, mostly primary products, so earnings follow world prices. Demand for primary products grows slowly as incomes rise (low income elasticity), so export earnings grow slowly. Imports of machinery and technology cost more, so deficits can open up.

Why the WTO matters. Agreed rules make trade policy more predictable, so firms invest and export with more confidence. A dispute system means a smaller country can challenge a larger one without relying on force. The limit is that a ruling needs the loser to cooperate.

Command words for this unit

Command word	What the specification says	How to meet it here
State	A sentence at most	Name the bloc, the WTO action or the pattern
What is meant by	Two separate parts to the definition	Group of countries, plus what they agree to do
Calculate	Workings should be given	Write each step and the units
Explain	A statement with two expansion points	Give the effect, then two linked steps
Analyse	Extended answer exploring an issue	Build a chain of cause and effect in context
Assess	Weigh up factors using the information	Compare factors and say which counts most
Evaluate	Reach a supported conclusion	Give both sides, then a reasoned judgement

Must-know distinctions

• Creation versus diversion.
• Free-trade area versus customs union: only the second has a common external tariff.
• Member versus non-member effects.
• WTO rules versus WTO enforcement.
• Developed exports (manufactures, services) versus developing exports (primary products).

Quick self-test

1. Define a trading bloc.
2. Name the extra feature a customs union has over a free-trade area.
3. State two examples of trading blocs.
4. Home price 90, partner price 70, tariff 40%. Buying from the partner before the bloc costs what? Is trade created after the bloc?
5. A firm has fixed costs of 300,000 and variable cost of 20 per unit. Find average cost at 10,000 and at 40,000 units.
6. Give two ways a non-member can lose from a bloc.
7. State two actions of the WTO.
8. Exports of 250 fall to 210 after a trade dispute. Find the percentage fall.
9. State two features of the exports of many developing countries.
10. Primary product YED is 0.4 and income rises 4%. Find the change in demand.
11. Give one reason why export earnings from primary products can be unstable.

Answers

1. A group of countries that reduce or remove trade barriers between themselves.
2. A common external tariff.
3. Any two, such as the European Union and Mercosur.
4. 70 × 1.40 = 98, above 90, so home buying before. After the bloc, 70 is below 90, so trade is created. Saving = 20 per unit.
5. At 10,000: 300,000 ÷ 10,000 + 20 = 50. At 40,000: 7.50 + 20 = 27.50.
6. Higher prices inside the bloc for their goods; lost sales and jobs; they may be tempted to retaliate.
7. Any two: negotiate trade deals, settle disputes, monitor policies, authorise retaliation, support developing countries.
8. (250 − 210) ÷ 250 = 16%.
9. Reliance on primary products; a narrow range of products or few buyers.
10. 0.4 × 4 = 1.6% rise.
11. Supply and demand for primary products shift with weather and world demand, and demand is price inelastic, so prices swing.

Where marks are usually lost

• Describing a customs union as “no tariffs”, missing the common external tariff.
• Treating trade diversion as only a gain because prices fall for buyers.
• Writing about tariff diagrams when the question is about blocs.
• Calling the WTO a bloc or saying it “bans” all tariffs.
• Quoting a bloc without saying what type it is.
• Using real-world claims from memory rather than the data given.
• Missing the working in a calculation.
• Ending an evaluation with no decision.

Official syllabus

Pearson Edexcel International GCSE in Economics (4EC1), specification Issue 3, first teaching September 2017, published by Pearson Education Limited. Statements 2.2.2 d), e) and f).