The U.S. Dollar is the official currency of the United States and is represented by the symbol "$" and the code "USD." It is widely used in international trade and is considered a global reserve currency, meaning many countries hold it as part of their foreign exchange reserves. The dollar is issued by the U.S. Department of the Treasury and is available in various denominations of coins and paper bills. The U.S. Dollar is divided into 100 smaller units called cents. It plays a crucial role in the global economy, influencing exchange rates and international financial markets. Many countries peg their currencies to the dollar or use it as their official currency, further solidifying its importance in global commerce.