International trade

International trade is the exchange of goods and services across national borders. For OCR A-Level Economics, this topic explores why countries trade, the benefits and costs of trade, and the policies that governments use to control it. You'll study classical theories like comparative advantage, which explains how countries gain from specialising in what they produce relatively more efficiently, even if they are less efficient overall. This topic also covers modern trade patterns, the role of the World Trade Organization (WTO), and the impact of trading blocs like the European Union (EU).

Understanding international trade is crucial because it shapes global economic growth, consumer prices, and employment. For example, trade allows the UK to import tropical fruits and export financial services, raising living standards. However, trade can also create winners and losers, such as domestic industries that struggle against foreign competition. This topic connects to microeconomics (e.g., market structures, efficiency) and macroeconomics (e.g., balance of payments, exchange rates). You'll need to evaluate arguments for free trade versus protectionism, using real-world examples like US-China trade tensions or Brexit.

In the OCR exam, international trade appears in both multiple-choice and essay questions. You might be asked to explain comparative advantage with a numerical example, discuss the impact of a tariff on consumer surplus, or evaluate whether free trade always benefits developing countries. Mastering this topic requires you to apply economic models (e.g., production possibility frontiers) and use precise terminology like 'terms of trade' and 'trade creation'. Strong answers also consider dynamic efficiency gains and the role of multinational corporations (MNCs).