US Dollar (USD)

The US Dollar (USD) is the official currency of the United States and one of the most widely used currencies worldwide. It serves as a standard for international trade, savings, and investment. The dollar is issued and regulated by the U.S. Federal Reserve. Its value fluctuates based on economic factors like interest rates, inflation, and global demand. The USD is recognized globally, often used as a reserve currency held by central banks and in international transactions, making it a key element of the global financial system.