The United States economy is one of the largest and most influential in the world. It operates as a mixed economy, combining elements of both capitalism and government intervention. Key sectors include services, manufacturing, and agriculture, with a strong emphasis on technology and innovation. The economy is measured by its Gross Domestic Product (GDP), which reflects the total value of goods and services produced. Employment rates, inflation, and trade balance are also important indicators. The Federal Reserve plays a crucial role in managing monetary policy to promote economic stability and growth.