What requires that the currencies of other countries have an exchange rate that is fixed to the dollar?

A fixed exchange rate system requires that the currencies of other countries maintain a stable value relative to the U.S. dollar. This is often achieved through government intervention, where a country’s central bank buys or sells its currency in the foreign exchange market to maintain its pegged value. Such a system can help reduce exchange rate volatility, promote trade stability, and provide greater predictability for international transactions. However, it also limits a country’s monetary policy flexibility and can lead to economic imbalances if not managed properly.