What currency is USD?

In finance, USD refers to the United States Dollar. It is the official currency of the United States and is widely used in international trade and finance. The USD is the most commonly traded currency in the world and is considered a major reserve currency. It is abbreviated as USD and is often represented by the symbol $. The value of the USD fluctuates in the foreign exchange market and is influenced by various factors such as economic data, monetary policy, and geopolitical events. As a result, it is important for businesses, investors, and individuals to closely monitor the exchange rate of the USD when engaging in international transactions or investments.