The global economy: Edexcel IGCSE Economics Complete Notes

The global economy section of the Edexcel IGCSE Economics specification examines how countries interact through trade, investment and currency markets. This is where economics stops being local and starts being worldwide.

Three topics fall under this heading: globalisation, international trade, and exchange rates. They form part of Paper 2 (Macroeconomics and the Global Economy), and they connect directly to the macroeconomic objectives and government policies covered in the previous section. A question about exchange rates, for instance, can easily lead into a discussion of inflation, the current account, and monetary policy. The edexcel igcse economics the global economy content rewards students who can trace these connections confidently.

These edexcel igcse economics revision notes take an analytical approach: each concept is defined, then applied through worked examples and real-world cases, then tested through self-check questions at the end.

Globalisation

Globalisation is the increased integration and interdependence of the world's economies. It means that what happens in one country's economy increasingly affects others. When a factory in China produces a smartphone, the components may come from South Korea and Japan, the software from the United States, and the final product is sold in over 100 countries. That supply chain is globalisation in action.

The main reasons for globalisation include:

Fewer tariffs and quotas: trade agreements and organisations like the WTO have progressively reduced barriers to trade over recent decades
Reduced transport costs: containerisation and cheaper air freight have made it economical to ship goods across the world
Reduced communication costs: the internet, video conferencing and mobile technology allow businesses to coordinate operations across multiple countries at low cost
The rise of multinational corporations (MNCs): large firms operate in many countries simultaneously, moving production to wherever costs are lowest or markets are largest

The impacts of globalisation are significant for every economic agent:

Who is affected	Potential benefits	Potential drawbacks
Consumers	Greater choice, lower prices through competition	Loss of local brands and cultural identity
Workers	Job creation in developing countries, skills transfer	Job losses in traditional industries in developed countries, exploitation of low-wage workers
Producers	Access to larger markets, lower input costs	Intense foreign competition may drive domestic firms out of business
Governments	Higher tax revenues from MNCs and growing economies	Difficulty regulating global firms, environmental damage, loss of sovereignty over economic policy
Environment	Spread of clean technology and environmental standards	Increased transport emissions, resource depletion, pollution in countries with weak regulation

Multinational corporations and foreign direct investment

A multinational corporation (MNC) is a business that operates in more than one country. Foreign direct investment (FDI) occurs when a firm invests in productive capacity in another country, for example by building a factory or acquiring a local business.

MNCs invest abroad to benefit from economies of scale, access natural resources or cheap raw materials, take advantage of lower transport and communication costs, and reach customers in different regions. Toyota, for instance, has manufacturing plants in Japan, the United States, the United Kingdom, Thailand and many other countries, allowing it to produce vehicles close to the markets where they are sold.

Exam tip: When evaluating MNCs, always consider both sides. They create jobs, invest in infrastructure, develop local skills, contribute capital, and pay taxes. But they may also avoid paying taxes through transfer pricing, cause environmental damage, move profits abroad rather than reinvesting locally, and crowd out domestic firms. The strongest exam answers use specific examples and explain why one side might outweigh the other in a particular context.

International trade

Free trade is the exchange of goods and services between countries without barriers such as tariffs or quotas. It offers several advantages: lower prices for consumers (because countries can specialise in what they produce most efficiently), a wider variety of goods available, lower input costs for businesses that import raw materials, and access to larger markets for exporters. But it also carries risks: domestic industries may be unable to compete with cheaper foreign imports, leading to job losses and the decline of traditional sectors.

Protectionism

Protectionism involves governments using barriers to restrict imports and protect domestic industries. The main reasons for protection include:

Preventing dumping: when foreign firms sell goods below cost to destroy domestic competition
Protecting employment: keeping jobs in industries that would otherwise be undercut by imports
Protecting infant industries: new industries may need temporary protection until they are large enough to compete
Gaining tariff revenue: import taxes generate income for the government
Protecting consumers: keeping out unsafe or substandard products
Reducing current account deficits: limiting imports can improve the trade balance
Retaliation: responding to protectionist measures imposed by trading partners

The three main methods of protection are:

Method	How it works	Advantages	Disadvantages
Tariff	A tax on imported goods, raising their price	Raises government revenue, makes domestic goods relatively cheaper	Raises prices for consumers, may provoke retaliation, protects inefficient domestic firms
Quota	A physical limit on the quantity of imports allowed	Directly limits the volume of imports	Does not raise revenue, may lead to higher prices, difficult to enforce
Subsidy	A payment to domestic producers to lower their costs	Keeps domestic prices competitive, supports local employment	Costly for the government, may prop up inefficient firms, can distort the market

Worked example: Suppose a country imports steel at $500 per tonne and imposes a 20% tariff. The new price for imported steel becomes $600 per tonne. Domestic steel producers, who sell at $580 per tonne, are now price-competitive. The government earns tariff revenue on every tonne imported. But manufacturers who use steel as an input (car makers, construction firms) now face higher costs, which may be passed on to consumers or reduce their international competitiveness.

Trading blocs and the WTO

Trading blocs are groups of countries that agree to reduce or eliminate trade barriers between members. The European Union, ASEAN (Association of Southeast Asian Nations), and USMCA (United States-Mexico-Canada Agreement) are prominent examples. Trading blocs benefit member countries through increased trade and economic integration, but they can disadvantage non-members who face the bloc's external trade barriers.

The World Trade Organization (WTO) is an international body that promotes free trade by setting rules, mediating trade disputes, and negotiating reductions in trade barriers. It aims to ensure that trade flows as smoothly and freely as possible.

Trade patterns differ between developed and developing countries. Developed countries tend to export manufactured goods and services with higher value added. Developing countries often depend on exports of primary commodities (agricultural products, minerals, fuels), which are subject to price volatility and lower profit margins.

Exchange rates

An exchange rate is the price of one currency in terms of another. If 1 British pound buys 1.25 US dollars, the exchange rate is GBP/USD = 1.25.

Exchange rates are determined by the supply of and demand for currencies. The factors affecting currency demand and supply include:

Interest rates: higher interest rates attract foreign capital, increasing demand for the domestic currency and causing appreciation
Currency speculators: traders who buy and sell currencies based on expected future movements can cause rapid changes in exchange rates
Imports and exports: a country that exports more than it imports sees higher demand for its currency from foreign buyers

Appreciation (or revaluation in a fixed exchange rate system) occurs when the value of a currency rises relative to others. Its impact:

Imports become cheaper (because each unit of domestic currency buys more foreign currency)
Exports become more expensive for foreign buyers (because they need more of their own currency to buy the same amount)
The current account may worsen as imports rise and exports fall

Depreciation (or devaluation in a fixed system) occurs when the value of a currency falls. Its impact is the reverse:

Exports become cheaper and more competitive abroad
Imports become more expensive
The current account may improve as demand shifts towards domestically produced goods

Worked example: The exchange rate moves from GBP 1 = USD 1.40 to GBP 1 = USD 1.20. The pound has depreciated. A British exporter selling a product for GBP 100 used to receive the equivalent of USD 140 from American customers. Now the American buyer pays only USD 120 for the same product, making it cheaper and more attractive. British imports from the US, however, become more expensive: a USD 50 item that used to cost GBP 35.71 now costs GBP 41.67.

Self-check questions

Use these igcse 4ec1 the global economy edexcel igcse economics practice questions to test your understanding:

Define globalisation and explain two reasons why it has increased in recent decades.
Evaluate the impact of a multinational corporation setting up a factory in a developing country. Consider effects on employment, tax revenue, skills, and the environment.
Explain why a government might impose a tariff on imported goods. What are the disadvantages of doing so?
The exchange rate changes from EUR 1 = USD 1.10 to EUR 1 = USD 1.25. Has the euro appreciated or depreciated? Explain the likely effect on the eurozone's exports.
A country relies heavily on exporting coffee beans. Explain why this dependence on a primary commodity might cause economic problems.

The global economy section of these edexcel igcse economics notes and edexcel igcse economics explained content ties the entire specification together. When you understand how trade flows, currencies move, and multinational corporations operate, you can answer virtually any Paper 2 question with confidence, because every macroeconomic problem has a global dimension. The exam rewards students who see that dimension and use it to strengthen their analysis.