1. The forex market is the largest and most liquid market in the world, with over $5 trillion traded daily globally on a decentralized basis across many exchanges.
2. Currencies can have a fixed exchange rate tied to another currency, or float freely based on market forces of supply and demand. Countries may fix their currency to promote trade stability or float it to allow market valuation.
3. Many factors influence currency values, including a country's economic performance, monetary and fiscal policies, inflation, interest rates, and political stability.