Characteristics of countries at different levels of development

Characteristics and constraints

Countries at different levels of development differ systematically across a set of indicators, and A Level answers are expected to use several rather than income alone. Income per head is the starting point but must be purchasing power adjusted, since non-traded goods are far cheaper in poorer countries and market exchange rates therefore understate real incomes. The sectoral composition of output shifts from primary through secondary to tertiary as development proceeds. Health indicators such as infant mortality and life expectancy, and education indicators such as literacy and years of schooling, capture outcomes. Employment structure matters, since the informal sector and underemployment dominate in poorer economies. And population structure, urbanisation and inequality complete the picture.

Two of those indicators deserve explanation rather than a mention. Infant mortality, the number of deaths of babies under one year old per thousand live births, is a sensitive summary of living standards, since it reflects nutrition, clean water, sanitation, the education of mothers and access to basic healthcare all at once. Urbanisation, the rising share of the population living in towns and cities, accompanies development because higher-paid jobs in manufacturing and services are concentrated there. It raises productivity, but rapid urbanisation can outrun housing and services, producing informal settlements without clean water or sanitation.

International organisations classify economies by income level, most commonly the World Bank's four groups: low income, lower-middle income, upper-middle income and high income, based on gross national income per head. The boundaries are revised each year, so the categories rather than the exact thresholds are what matter. The classification is useful because it groups countries facing similar constraints, but it measures income only, so two countries in the same group can differ widely in health, education and inequality.

The Kuznets curve suggests that inequality first rises and then falls as an economy develops. In the early stages, workers move from low-productivity farming to higher-paid jobs in industry, so the gap between those who have moved and those who have not widens. Later, as most of the workforce has moved, education spreads and governments introduce progressive taxes and welfare systems, inequality falls. Drawn with income per head on the horizontal axis and a measure of inequality such as the Gini coefficient on the vertical, the relationship is an inverted U. The evidence is mixed: inequality has risen again in many high-income economies since the 1980s, and some fast-growing economies have kept inequality low, so the curve describes a possible path rather than an inevitable one.

The constraints on development are best understood as a set of gaps. The savings gap is the shortfall between the saving a country generates and the investment it needs, arising because households at subsistence income cannot save. The foreign exchange gap limits the imported capital equipment growth requires, and binds hardest where exports are concentrated in volatile primary commodities. The human capital gap limits the ability to absorb and operate imported technology. The infrastructure gap raises costs for every firm at once. And the institutional gap, meaning insecure property rights, unenforceable contracts and corruption, deters investment regardless of the returns available. These gaps interact, which is why addressing one alone rarely produces the expected result.

Relations between countries at different levels of development run through four channels, and each cuts both ways. Trade offers market access and the gains from specialisation, but dependence on primary commodities exposes a country to volatile prices and, on the Prebisch-Singer hypothesis, to terms of trade that decline over the long run because demand for primary products grows more slowly with income than demand for manufactures. Foreign direct investment brings capital, technology and jobs, but profits are repatriated, investment may be enclave in character with few local linkages, and bargaining power over tax and conditions is weak. Aid can fund infrastructure and emergency relief, but may create dependency, distort local markets and be tied to purchases from the donor. Debt finances investment, but servicing diverts revenue from development spending and foreign currency debt becomes crushing if the currency depreciates.

Donors give aid for several motives, and the motive shapes its effect. Humanitarian motives drive emergency relief and much aid for health and education. Political and strategic motives lead donors to support allies or countries in regions they consider important. Commercial motives lie behind tied aid, which must be spent on the donor's own goods and services and so supports the donor's exporters. Some aid aims to promote global public goods, such as controlling infectious disease or limiting climate change, which benefit donors as well as recipients. Aid given for commercial or political reasons is less likely to go where it does most good for development.

Development strategies have swung between two poles and the evidence favours neither absolutely. Import substitution industrialisation protects domestic manufacturing behind tariffs to build capacity, on the infant industry argument. It produced some capacity but, pursued for decades, protected inefficiency and was limited by the size of small domestic markets. Export-led growth orients production towards world markets, which imposes competitive discipline and lifts the constraint of market size, and it underlies the fastest development episodes on record in East Asia. Its limits are that it depends on open markets abroad and that not every country can run a surplus simultaneously. Most successful cases combined elements of both, with targeted temporary protection alongside an export orientation and heavy investment in education.

Multinational companies are firms that own or control production in more than one country, and the syllabus expects their activities and consequences rather than a verdict. They locate stages of production wherever costs, taxes, skills or market access are most favourable, so a single product may cross several borders before sale. For a host country the benefits are real: capital that domestic saving cannot supply, technology and management practice, employment and training, tax revenue, and access to the parent's distribution networks. The costs are equally real: profits repatriated rather than reinvested, so GDP rises by more than GNI; enclave operations with imported inputs and few local linkages; bargaining power that lets large firms negotiate tax concessions a small government cannot refuse; and the option to relocate, which weakens the host's leverage over wages and standards.

Foreign direct investment is the mechanism through which that happens, meaning investment giving a lasting interest in and control over an enterprise abroad, as distinct from portfolio investment which buys securities without control. The distinction matters for stability: direct investment is embedded in physical assets and cannot be withdrawn quickly, whereas portfolio flows can reverse within days, so an economy financing its deficit through FDI is far less exposed to a sudden stop than one relying on portfolio capital. Whether FDI promotes development depends on the sector, on whether local linkages develop, and on whether the host has the institutional capacity to tax and regulate it.

External debt is borrowing owed to foreign lenders, and its causes are identifiable: current account deficits requiring finance, borrowing to fund development spending domestic revenue cannot cover, commodity price collapses that destroy export earnings after loans were taken out, and currency depreciation that raises the domestic cost of servicing debt denominated in dollars. The consequences compound. Debt servicing diverts government revenue from health, education and infrastructure. It absorbs scarce foreign exchange that would otherwise buy capital equipment. Heavily indebted countries pay higher interest rates, so the burden grows. And the debt overhang deters investment, since investors anticipate that future returns will be taxed to service it.

Two international institutions recur in this topic and are frequently confused. The International Monetary Fund exists to promote monetary cooperation and exchange rate stability, and lends to countries facing balance of payments crises, typically short term and conditional on policy reform. The World Bank exists to fund long-term development, lending for infrastructure, health and education projects and providing technical assistance. In short, the IMF addresses stabilisation and the World Bank addresses development. Both are criticised on similar grounds: that conditionality imposes policy on borrowers without democratic mandate, that the reforms attached have sometimes deepened recessions and cut spending on the poorest, and that voting rights are weighted towards the wealthiest members. The counter-argument is that a lender of last resort with no conditions attached would simply subsidise the policies that produced the crisis.