HookPercy Pig got stopped at the border
In January 2021, days after the UK–EU Trade and Cooperation Agreement came into force, Marks & Spencer discovered that its most famous sweet had become a customs problem. Percy Pigs are made in Germany, shipped to M&S depots in Britain, and some are then re-exported to stores in the Republic of Ireland. Under the deal's rules of origin, goods that merely pass through the UK without being substantially transformed can face EU tariffs on the way back out — so a 'zero-tariff' trade deal still left Percy facing a possible tax at the Irish border.
That absurdity is Theme 4 in miniature. Globalisation has woven supply chains so tightly that a bag of sweets can cross three borders before it reaches a till, and the rules governing each crossing — tariffs, quotas, blocs, origin tests — quietly decide which business models survive. This section gives you the machinery: why economies such as China and India are growing fast enough to redraw the map of demand, how trade and foreign investment feed business growth, what actually drove globalisation's acceleration after 1980, and what happens when governments start building the walls back up.
ModelGrowing economies — where the next billion customers live
A mature economy like the UK grows perhaps 1–2% in a decent year. China averaged close to 10% a year for three decades after its 1978 reforms — the World Bank credits that run with lifting roughly 800 million people out of extreme poverty — and in 2022 India overtook the UK to become the world's fifth-largest economy, still growing at around 6–7%. Economic power is shifting towards Asia and, increasingly, Africa: on UN projections Nigeria will be the world's third most populous country by around 2050.
For individuals, growth changes employment patterns (out of agriculture, into factories and services) and raises incomes — creating the new middle-class consumers every global business is chasing. For businesses, it creates trade opportunities that can dwarf the home market. JCB opened its first Indian factory at Ballabgarh in 1979; today India is JCB's single biggest market, and a majority of the backhoe loaders sold there carry its logo. A Staffordshire digger-maker's future is being decided on Indian construction sites.
Edexcel expects you to judge growth with more than one indicator. GDP per capita is the workhorse, but it says nothing about distribution or quality of life, which is why the spec adds literacy, health and the Human Development Index — a composite of income, education and life expectancy. An oil state can post a high GDP per capita and a mediocre HDI; the indicator you choose changes the country you think you are looking at.
ModelTrade, specialisation and FDI — the growth engine
Exports are goods and services sold abroad; imports are those bought in. The UK exported around £850bn of goods and services in 2023, and — less obviously — is the world's second-largest exporter of services, at roughly £470bn. The spec's key link is between specialisation and competitive advantage: firms and countries that concentrate on what they do best get better and cheaper at it than anyone else. Scotch whisky can only legally be made in Scotland and earned about £5.6bn in exports in 2023; Taiwan's TSMC makes the overwhelming majority of the world's most advanced computer chips. Specialisation created those positions; international trade lets them be monetised globally, which is why exporting firms tend to grow faster than purely domestic ones.
Foreign direct investment is the other engine: a firm building or buying productive assets in another country rather than just selling to it. Nissan's Sunderland plant, opened in 1986, is the UK's textbook example — FDI that now supports around 6,000 direct jobs and an estimated 30,000 more across the supply chain. FDI matters for business growth because it jumps over trade barriers, puts the firm next to its customers, and transfers capital, technology and management know-how in a way exporting never can.
MechanismWhy globalisation accelerated after 1980
The spec lists eight drivers; learn them as a system, not a shopping list. Trade liberalisation: successive GATT and WTO rounds cut average tariffs on manufactured goods from over 20% after the war to under 5% today. Political change: China opened up from 1978 and joined the WTO in 2001; the Soviet bloc collapsed in 1991. The economist Richard Freeman called the combined effect 'the great doubling' — the labour force available to global firms roughly doubled, to around three billion workers — which is also the spec's growth of the global labour force.
Reduced transport and communication costs: containerisation, pioneered by Malcom McLean in 1956, cut ship-loading costs from about $5.86 to $0.16 per ton, and an international phone call that cost pounds per minute in the 1980s is now effectively free on WhatsApp. Add the increased significance of transnational companies exploiting these conditions, increased investment flows (FDI), migration within and between economies, and structural change as economies shift from farms to factories to services, and you have the whole engine room. The exam trick is to chain any two into cause and effect: cheap containers make offshoring viable, which raises FDI flows, which accelerates structural change in the host economy.
MechanismProtectionism — how governments push back
Tariffs tax imports; import quotas cap their volume; and the quieter barriers — product legislation and standards, plus domestic subsidies that let home firms undercut foreign rivals — often bite hardest because they are invisible in a price list. Two things students routinely get wrong: it is the importer, not the foreign exporter, who pays a tariff at the border, and the cost is usually passed on to consumers. When the US put tariffs on imported washing machines in 2018, one academic study found US prices rose about 12%, costing consumers roughly $1.5bn a year — over $800,000 for every manufacturing job created.
Protectionism is also a competitive weapon aimed at individual firms. In 2017 Boeing persuaded the US Commerce Department to propose duties of nearly 300% on Bombardier's C-Series jets, whose wings were built in Belfast — putting around 4,000 Northern Irish jobs at risk. The US International Trade Commission threw the case out in January 2018, but the lesson stands: a rival's lobbying can be as dangerous as a rival's product.
In October 2019 the US imposed a 25% tariff on single malt Scotch whisky during the Airbus–Boeing dispute. Model a distillery exporting 1,000,000 bottles a year at £20 each (revenue £20m; unit cost £12). Option 1 — pass the tariff on: the landed price rises to £25; if that feeds through to roughly a 12% shelf-price rise and demand for premium spirits is price-elastic (PED ≈ 1.6), volumes fall about 20% to 800,000 bottles, so revenue drops to 800,000 × £20 = £16m. Option 2 — absorb it: cut the export price to £16 so the tariff-inclusive price stays at £20 (£16 × 1.25); volumes hold at 1,000,000, but revenue is again £16m and margin per bottle halves from £8 to £4. Either way roughly £4m vanishes — the only decision is whose ledger it comes off. The Scotch Whisky Association put the industry's real losses at over £600m before the tariff was suspended in 2021.
CaseTrading blocs — inside the wall or outside it
A trading bloc removes trade barriers between members while (usually) keeping them against outsiders. The spec names three. The EU — 27 members, around 450 million consumers — is the deepest: a single market with free movement of goods, services, capital and labour, plus a customs union with a common external tariff. USMCA replaced NAFTA in 2020, tying the US, Mexico and Canada together. ASEAN links ten South-East Asian economies with roughly 670 million people.
For businesses, membership means tariff-free scale: Nissan built Sunderland partly because a plant inside the (then) EEC could serve the whole continent, and for decades around 70% of its output went to the EU. Being outside the wall pushes firms to jump it — the reason Japanese carmakers poured FDI into 1980s Britain in the first place. And leaving a bloc re-imposes friction even without tariffs: the UK–EU deal is tariff-free and quota-free, yet customs declarations, product checks and rules of origin — Percy Pig's problem — all returned in January 2021. The UK's answer has been new memberships: it formally joined CPTPP, the trans-Pacific bloc, in December 2024. An evaluation line worth memorising: blocs create trade between members but can divert it away from cheaper non-members — so the business impact depends entirely on which side of the wall you stand.
VocabularyKey terms the mark scheme pays for
TrapsMisconceptions that cost marks
ExamWhat examiners want
Theme 4 is examined on Paper 1 alongside Theme 1, and again synoptically on Paper 3 with a pre-released context — so every concept here must be applied to a named business, never floated in the abstract. On 8- and 10-mark 'assess' questions, build two developed chains (a benefit and a cost of, say, a tariff) and anchor each in the case: a tariff hurts JCB differently from a software firm, because diggers cross borders and code does not.
On 12- and 20-markers the discriminator is a weighted conclusion. 'Protectionism has costs and benefits' scores nothing; 'the tariff's impact depends on the price elasticity of demand for the firm's exports and on what share of revenue that market represents — for Scotch whisky, with 25% duties on elastic premium demand, the damage ran to hundreds of millions' is a level-4 judgement. Quote figures from the extract, and if it hands you a tariff rate or an exchange rate, do the arithmetic — examiners consistently reward candidates who calculate rather than describe.