Overview
This lecture explains why currencies have different values, how exchange rates work, and what factors affect currency strength and fluctuation.
Currency History
- Currencies were once backed by gold under the "gold standard," making exchange rates stable.
- With global trade expansion, countries switched to "fiat money," which is not backed by physical assets but by government trust.
Why Currency Values Differ
- Currency value depends on supply and demand in global markets.
- Strong economies have more in-demand currencies, while weak economies or those with inflation have less valuable currencies.
Inflation
- Inflation is when money loses value due to too much currency circulating compared to goods and services.
- High inflation leads to lower currency value, as seen in Zimbabwe's example.
Interest Rates
- Interest rates are the cost of borrowing money, set by central banks.
- Higher interest rates attract investors, increasing currency demand and value.
- Very high-interest rates can slow economic growth due to expensive borrowing.
Country Situation & Foreign Investment
- Stable governments and economies attract foreign investors, increasing currency demand.
- Political and economic instability drives investors away, weakening currency.
Exports and Imports
- Exporting countries have higher currency demand because foreign buyers need local currency to pay.
- Countries with little to export or unstable trade often use stronger foreign currencies.
- The U.S. Dollar is globally demanded due to its use in oil trading (the “Petrodollar”).
Fixed and Pegged Currencies
- Some nations peg their currency to a stronger one (e.g., Brunei to Singapore Dollar) to maintain stability.
- Pegged currencies depend on the health of the stronger currency.
Single World Currency & Policy Control
- Using a single global currency would remove exchange rates but require countries to give up control over their monetary policy.
- Shared currency can spread financial crises across nations, as seen with the Eurozone.
Currency Strength Strategies
- Not all countries aim for the strongest currency; importing nations prefer strong currencies, exporting nations may prefer weaker ones.
- Some countries deliberately devalue currency to boost exports.
Key Terms & Definitions
- Gold Standard — System where currency is backed by a set amount of gold.
- Fiat Money — Currency valued by government decree, not backed by physical assets.
- Inflation — Gradual decrease in currency value and increase in general price levels.
- Interest Rate — Percentage cost of borrowing money.
- Pegged Currency — Currency fixed in value relative to another currency.
- Currency Devaluation — Deliberate lowering of a currency’s value to support exports.
Action Items / Next Steps
- Review concepts of inflation, fiat money, and pegged currencies.
- Watch related videos: “Why don’t we just print more money?” and “How does currency devaluation work?” if interested.
- Prepare questions for further discussion on global currency systems.