Specialisation and free trade

Economics · International trade and globalisation. The idea in plain words, the rules to remember, the mistake to avoid and a worked example, written and checked by Mega Lecture.

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The idea

Specialisation by country means a country concentrates on producing the goods and services it is best at, and trades for the rest. It should choose what it can make at a lower cost than others, because of its resources: climate, land, minerals, skills or capital.

When every country does this, resources are used where they are most productive, so total world output rises. Firms also gain economies of scale. The risks are over-dependence on one product, structural unemployment in other industries, and loss of supplies if trade is cut off.

Free trade is international trade without restrictions such as tariffs and quotas. Consumers gain lower prices and more choice; inefficient domestic firms may close.

Rules to remember

Specialisation by country = a country concentrates on the products it is best at producing.
Basis: produce what you can make at a lower cost, or with a better use of resources, than other countries.
Free trade = international trade with no restrictions (no tariffs, quotas or other barriers).
Gains: higher world output, lower prices, more choice, economies of scale, more competition and efficiency.
Risks: over-dependence on a few products, falls in world price or demand, structural unemployment, exhausted resources.
From free trade, consumers and efficient exporters gain; protected domestic firms and their workers may lose.

Common mistake

Students write that free trade helps all domestic firms. It helps the efficient ones that can export, and it harms those that cannot compete with cheaper imports.

Worked example

One worker in Country A can make 10 tonnes of rice or 5 rolls of cloth. One worker in Country B can make 4 tonnes of rice or 8 rolls of cloth. Each country has 2 workers. What happens to total output if they stop splitting workers equally and specialise?

Split equally: rice = 10 + 4 = 14 tonnes, cloth = 5 + 8 = 13 rolls.
A is better at rice (10 against 4) and B is better at cloth (8 against 5).
Specialised: A makes 2 × 10 = 20 tonnes of rice, B makes 2 × 8 = 16 rolls of cloth.
Gain: rice 20 − 14 = 6 tonnes, cloth 16 − 13 = 3 rolls.

Answer: Total output rises by 6 tonnes of rice and 3 rolls of cloth, with the same number of workers.

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