Fixed Exchange Rates:A system where a country's currency value is pegged to another currency or a basket of currencies, and the exchange rate is maintained within a narrow range through government intervention.
Managed Floating: A hybrid system where the exchange rate is allowed to fluctuate within a certain range, but the government or central bank may intervene to influence the currency's value.
Purchasing Power Parity (PPP): An economic theory that states the exchange rate between two currencies should equalize the price of a basket of goods and services in those countries, adjusting for inflation.