Example of a AQA unit 4 question from June 2007. AQA paper available here
Note: Some of the data can’t be published online.
This is just a short guide to answer the question. I think it lacks – more use of data and more evaluation.
Explain why Free Trade is important to EU member countries
1:1 Exports are an important component of Aggregate Demand and therefore influence economic growth
1:2 Consumers rely on imports to enable higher living standards e.g cheap clothing imports from China and cars from the EU.
1:3 Free Trade is an important engine of growth
1:4 Free Trade increases competition and incentives to cut costs
1:5 Some countries have few natural resources therefore, trade is essential to enable them to have oil / petrol e.t.c
1:6 Trade helps technological innovation