Welcome to the Global Context!
Ever wondered why your smartphone was designed in California, but assembled in China using components from South Korea? Or why you can eat strawberries in the middle of winter in the UK? That is the magic of international trade.
In this chapter, we are going to explore how countries trade with each other and how the "price" of money (exchange rates) affects everyone from holidaymakers to giant corporations. Don't worry if it sounds complex—we'll break it down piece by piece!
4.1 International Trade
What is International Trade?
Simply put, international trade is the exchange of goods and services across national borders. It involves two main activities:
1. Exports: Goods or services produced domestically and sold to people in other countries (Money flows into the country).
2. Imports: Goods or services bought from other countries to be used domestically (Money flows out of the country).
Analogy: Think of a country like a giant household. If you bake a cake and sell it to your neighbor, that’s an export. If you buy a pizza from the shop down the road, that’s an import!
Patterns of International Trade Over Time
The way the world trades has changed massively over the last few decades:
• Increased Volume: We trade much more now than we did 50 years ago due to better technology and cheaper shipping.
• Rise of Emerging Economies: Countries like China and India have become "the world's factory," moving from selling simple goods (like clothes) to high-tech goods (like cars and electronics).
• Trading Blocs: Countries often join "clubs" like the European Union (EU) to make trading with their neighbors easier and cheaper.
• De-industrialisation in Developed Nations: Countries like the UK now export more services (like banking, insurance, and education) and fewer physical goods compared to the past.
Evaluating International Trade
Trade isn't always a "win-win" for everyone in the same way. Economists look at the impact on different types of countries:
1. Developed Countries (e.g., UK, USA)
• Advantages: Access to cheaper raw materials and a wider variety of consumer goods. High-tech firms have a global market to sell to.
• Disadvantages: "Structural unemployment"—traditional manufacturing jobs (like steel or textiles) may move to countries where labor is cheaper.
2. Emerging and Developing Countries (e.g., Vietnam, Ethiopia)
• Advantages: Trade creates jobs and brings in Foreign Direct Investment (FDI). It allows these countries to grow their economies quickly and reduce poverty.
• Disadvantages: They may become too dependent on one single export (like oil or coffee). There are also concerns about "infant industries" being crushed by big international brands before they have a chance to grow.
Quick Review: International trade allows countries to specialise in what they are best at, but it can lead to job losses in older industries.
4.2 Exchange Rates
What is an Exchange Rate?
An exchange rate is simply the price of one currency expressed in terms of another. For example, if \( £1 = \$1.25 \), it means you need one British Pound to buy one dollar and twenty-five cents.
Calculating Exchange Rates
To convert from domestic currency to foreign currency: Multiply by the exchange rate.
To convert from foreign currency back to domestic: Divide by the exchange rate.
Example: You have £500 for a holiday to the USA. The rate is \( £1 = \$1.20 \).
Calculation: \( 500 \times 1.20 = \$600 \).
How are Exchange Rates Determined?
There are two main systems you need to know:
1. Floating Exchange Rate Systems
The value of the currency is decided by demand and supply in the foreign exchange market. Most major currencies (like the Pound, Dollar, and Euro) use this.
• Demand for a currency increases if foreigners want to buy that country's exports or keep their money in that country's banks.
• Supply of a currency increases if domestic residents want to buy imports or move their money abroad.
2. Fixed Exchange Rate Systems
The government or Central Bank "pegs" (fixes) the value of their currency against another currency (like the US Dollar) or gold. They maintain this by buying and selling their own currency reserves to keep the price steady.
Causes and Consequences of Exchange Rate Changes
If the value of a currency goes up, we call it an Appreciation. If it goes down, it is a Depreciation.
Why do rates change?
• Interest Rates: If the UK raises interest rates, foreign investors want to save their money in UK banks. This increases demand for the Pound, causing it to appreciate.
• Speculation: If people think a currency will be worth more in the future, they buy it now, which pushes the price up.
• Trade Balance: If a country exports a lot, there is high demand for its currency.
What are the consequences? (The SPICED Mnemonic)
A great way to remember the effect of a strong currency is the acronym SPICED:
Strong
Pound
Imports
Cheap
Exports
Dear (Expensive)
• Consequence of a Strong Currency: It's great for consumers (cheaper holidays and cheaper imported clothes), but bad for domestic exporters (their goods look too expensive to foreigners), which might lead to job losses in factories.
• Consequence of a Weak Currency: The opposite! Exports become cheaper (boosting sales for domestic firms), but imports like petrol and food become more expensive, which can cause inflation.
Advantages and Disadvantages of Exchange Rate Systems
Floating Systems
• Advantage: It acts as an "automatic stabiliser." If a country has a huge trade deficit, the currency value will naturally fall, making exports cheaper and eventually fixing the problem.
• Disadvantage: Uncertainty. Firms find it hard to plan for the future because they don't know what the exchange rate will be next month.
Fixed Systems
• Advantage: Certainty. It provides stability for firms involved in international trade, encouraging investment.
• Disadvantage: The government loses control over interest rates (as they must use them to manage the exchange rate) and needs huge amounts of foreign currency reserves.
Common Mistakes to Avoid
• Confusing Appreciation and Depreciation: Always double-check! Appreciation = Value up. Depreciation = Value down.
• Thinking a "Strong" currency is always "Good": While it sounds positive, a strong currency can actually hurt a country's economic growth by making exports too expensive.
• Mixing up Exports and Imports: Remember, EXports EXit the country. IMports come INto the country.
Summary: Key Takeaways
• International Trade allows for specialisation and choice but can cause structural unemployment in developed nations.
• Exchange Rates are the prices of currencies. They are determined by demand and supply (Floating) or set by the government (Fixed).
• SPICED: A Strong Pound makes Imports Cheap and Exports Dear. This is the most important "trick" to remember for your exams!
Don't worry if the diagrams for demand and supply of currency seem tricky at first. Just remember they work exactly like the normal demand and supply curves you learned in Microeconomics!