Types of trade protection: notes and practice questions
- This topic examines various government measures used to restrict international trade.
- Trade protection refers to policies that shield domestic industries from foreign competition.
- Tariffs are taxes on imported goods, increasing their price and reducing quantity demanded.
- Quotas are physical limits on the quantity of imported goods, leading to higher prices and reduced supply.
- Subsidies are government payments to domestic producers, lowering their costs and making them more competitive.
- Administrative barriers include stringent standards and regulations that make it difficult for imports to enter a country.
- All these measures impact domestic markets, consumers, producers, and government revenue.
How it is examined
The most calculation-friendly subtopic in Unit 4 at HL, and a diagram staple at SL. May 2025 Paper 2 TZ1 Q1(c) asked for an international trade diagram showing the Sw + tariff line moving down when a tariff is cut, plus an explanation, for 4 marks, with a maximum of 3 if the diagram is mislabelled.
- Tariffs, and their effects on markets and stakeholders. (AO3, AO4)
- Quotas, and their effects on markets and stakeholders. (AO3, AO4)
- Subsidies and export subsidies, and their effects on markets and stakeholders. (AO3, AO4)
- Administrative barriers, being standards and regulations. (AO3)
- Calculating, from a diagram, the effects on stakeholders of tariffs. (AO4)
- Calculating, from a diagram, the effects on stakeholders of quotas. (AO4)
- Calculating, from a diagram, the effects on stakeholders of subsidies. (AO4)
Guiding questions
- What tools restrict trade, and who wins and loses from each?
Linking questions
- Sits directly on the free trade diagram from 4.1.
- Uses consumer and producer surplus from 2.3 and subsidies from 2.7.
- 4.3 supplies the arguments for and against the tools defined here.
- Trade liberalisation in 3.7 and 4.10 is the reverse of 4.2.
Practice questions
5 questions · 5 hardQuestion 1
HardPaper 1 · no calculator25 marks(a) Explain, using diagrams, how a government can use tariffs and subsidies to protect domestic industries.
(b) Using real-world examples, evaluate the argument that developing countries should use trade protection to promote economic development.
For each policy (tariff and subsidy), you need to define it, draw a separate diagram showing its effect on the domestic market, and explain how the changes shown in the diagram lead to protection for domestic firms.
Consider the arguments for protectionism in the context of a developing economy (like the infant industry argument). Then, consider the counter-arguments and the potential benefits of free trade for development. Use specific country examples to support your points and come to a balanced conclusion.
Question 2
HardPaper 1 · no calculator25 marks(a) Explain how a government might use trade protection to support an infant industry and to protect national security.
(b) Using real-world examples, evaluate the effectiveness of trade protection as a strategy to promote economic development.
For each reason (infant industry and national security), define the concept and then explain the mechanism of a specific protectionist policy (like a tariff or a quota) that could be used to achieve that goal. Consider using a diagram to illustrate how the policy affects the domestic market.
Start by defining economic development. Then, build arguments for why trade protection might promote it (e.g., by fostering industrialization). Counter these with arguments against (e.g., inefficiency, higher prices). To evaluate, you need to weigh these arguments and come to a reasoned judgement. Support your points with specific examples of countries that have used protectionist policies and discuss the outcomes.
Question 3
HardPaper 1 · no calculator25 marks(a) Explain two arguments governments might use to justify the implementation of trade protection policies.
(b) Using real-world examples, evaluate the claim that trade protectionism ultimately harms an economy more than it helps.
Think about the reasons why a government might want to shield its domestic industries from foreign competition. Consider arguments related to new industries, jobs, or national interests. For each argument, explain the economic logic behind it.
To evaluate this claim, you need to consider both sides of the argument. First, explain the potential benefits of protectionism (how it 'helps'). Then, explain the potential drawbacks (how it 'harms'). Use economic concepts like allocative efficiency, consumer surplus, and retaliation. Conclude with a reasoned judgment, supported by real-world examples such as specific trade disputes or long-term protectionist policies.
Question 4
HardPaper 1 · no calculator25 marks(a) Explain two arguments in favour of trade protection, and analyse the effects of an import tariff on an economy.
(b) Using real-world examples, discuss the view that adopting a policy of free trade is the most effective way for a country to achieve economic development.
Start by defining trade protection. Then, choose two distinct reasons why a government might restrict trade (e.g., protecting new industries, national security). For the second part, draw a standard tariff diagram and use it to explain the impact on consumers, producers, the government, and overall economic welfare.
Structure your answer as a debate. First, present the arguments for free trade as a driver of economic development (think comparative advantage, efficiency, economies of scale). Then, present the counter-arguments, which are essentially the arguments for protectionism in the context of development (e.g., the infant industry argument). Use real-world examples of countries or regions to support both sides. Conclude with a balanced judgment on whether free trade is the 'most effective' way.
Question 5
HardPaper 1 · no calculator25 marks(a) Explain how government intervention in education and healthcare can help a developing country to diversify its economy.
(b) Using real-world examples, discuss the view that trade protectionism is the most effective way for a developing country to promote economic development.
Start by defining economic diversification and explaining why it is a goal for many developing countries. Then, consider how improved education and healthcare act as supply-side policies, enhancing the quality of the workforce (human capital). Link this improved human capital to the ability of an economy to move into manufacturing and service industries.
Structure your answer by first explaining the arguments for trade protection in the context of a developing country (e.g., the infant industry argument). Then, present the counter-arguments against protectionism (e.g., inefficiency, retaliation). To 'discuss', you must weigh these two sides. Is it the 'most effective' way? Compare it with other development strategies like export promotion or attracting FDI. Use specific country examples to support your points.
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Where marks are lost
- No real-world example, or a stated one. An answer that names a country and stops cannot reach the top two bands.
- One-sided argument. Balance is an explicit axis. A student who argues only that a policy works is capped at 9 out of 15 on that axis alone.
- Diagram present but not explained. The diagram bullet escalates across three bands: included, included and explained, included and fully explained. A diagram dropped into an answer without prose that refers to it sits at 5 to 6 on a 10-mark part.
