✅ Benefits of Free Trade
Free trade.
- Greater efficiency — resources are allocated to their most productive use through specialisation.
- Lower prices — consumers benefit from cheaper imported goods.
- Greater choice — access to a wider variety of goods and services.
- Increased competition — domestic firms face foreign competition, forcing innovation and efficiency.
- Economies of scale — firms access larger markets, reducing average costs.
- Technology transfer — trade spreads new technology and knowledge across borders.
- Economic growth — export-led growth has driven development in East Asian economies.
⚖️ The Terms of Trade
Terms of trade.
Interpreting changes
- Improvement (ToT rises) — export prices rise relative to import prices. A country can buy more imports per unit of exports. BUT it may become less competitive.
- Deterioration (ToT falls) — export prices fall relative to import prices. More exports needed to buy the same imports. BUT exports may become more competitive.
An improvement in the terms of trade is not always good. If it's caused by rising export prices, the country may lose export competitiveness. Context matters — this is a classic IB evaluation point.
Causes of changes in ToT
- Changes in world commodity prices (e.g. oil price spike → improvement for exporters)
- Changes in exchange rates (appreciation → improvement in ToT)
- Changes in relative inflation rates
- Changes in productivity and quality of exports
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⚠️ Limitations of Comparative Advantage Theory
Ricardo's model is elegant but relies on simplifying assumptions that rarely hold in reality:
- Only two countries/two goods — the real world has hundreds of trading partners and thousands of products.
- Constant costs of production — in reality, opportunity costs often increase as production expands.
- Perfect factor mobility within countries — workers can't always switch industries (structural unemployment).
- No transport costs — shipping, tariffs, and logistics costs are significant in practice.
- Assumes full employment — trade may cause unemployment in uncompetitive industries.
- Ignores income distribution — trade creates winners (consumers, exporters) and losers (workers in competing industries).
- Quality differences ignored — the model treats goods as homogeneous.
Despite these limitations, comparative advantage remains the most important argument for free trade in economics. It explains why trade is mutually beneficial even between unequal partners.