The **Federal Government of the United States** is the national governing body established by the U.S. Constitution, operating under a system of federalism where power is shared between the national government and the 50 individual states[1][3]. It is divided into three distinct branches—**legislative**, **executive**, and **judicial**—each with constitutionally defined powers designed to balance and check one another to prevent any single branch from becoming too powerful[1][2][5]. The **legislative branch**, embodied by the bicameral Congress (the House of Representatives and the Senate), is responsible for creating laws, declaring war, regulating interstate and foreign commerce, and controlling federal taxing and spending policies[2][6]. The **executive branch**, headed by the President and including the Vice President and 15 Cabinet-level departments, enforces laws and manages federal agencies[2][6]. The **judicial branch** includes the U.S. Supreme Court and lower federal courts, tasked with interpreting laws and ensuring they comply with the Constitution[2][5][7]. Historically, the federal government was established in 1789 following the ratification of the Constitution, which laid the foundation for a representative democracy and division of powers. It has since grown to govern a nation of 50 states with diverse populations and territories, including the District of Columbia and sovereign Indigenous tribes under federal jurisdiction[1][4]. The government’s structure symbolizes stability and democratic governance, with Washington, D.C. serving as the central seat of power[1][4]. Key achievements include establishing a comprehensive legal framework that balances federal and state powers, managing national defense and foreign policy, and continually adapting to technological and societal changes. The government oversees numerous agencies that drive innovation, security, and public services, such as the Federal Bureau of Investigation and National Oceanic and Atmospheric Administration[1]. Today, the federal government remains a critical institution influencing business, technology, and societal progress, maintaining constitutiona