Forex prices, or foreign exchange rates, are influenced by a myriad of factors that reflect the economic health and stability of countries, as well as market psychology and geopolitical events. Key determinants include:

1. Interest Rates: Central banks influence forex prices through monetary policy. Higher interest rates offer better returns on investments denominated in that currency, attracting foreign capital and causing the currency to appreciate.

2. Economic Indicators: Data such as GDP growth, unemployment rates, and manufacturing output inform traders about the economic health of a country. Strong economic performance typically leads to a stronger currency.

3. Political Stability and Economic Performance: Countries with less risk for political turmoil and economic instability are more attractive to foreign investors, thus boosting their currency value.

4. Market Sentiment: Traders' perceptions and speculations can drive currency prices. If investors believe a currency will strengthen, they will buy more of it, causing its price to rise.

5. Trade Balances: A country with a significant trade surplus (exporting more than it imports) will generally have a stronger currency, as foreign buyers need to purchase the exporter’s currency to pay for goods.

6. Inflation Rates: Lower inflation typically leads to currency appreciation as its purchasing power increases relative to other currencies.

7. Geopolitical Events: Wars, elections, and policy changes can lead to increased volatility and shifts in forex prices, as these events can alter economic stability and investor confidence.

Understanding these factors helps traders and investors predict and react to forex market movements.