The Constitution of the United States is the supreme law of the country, originally drafted in 1787 and effective since 1789. It is the oldest written national constitution still in use. The Constitution establishes the structure of the federal government, dividing it into three branches: legislative (Congress), executive (the President), and judicial (Supreme Court). It consists of a Preamble; seven Articles defining government structure and powers; and 27 Amendments, including the Bill of Rights, which guarantees individual liberties and justice. The Constitution emphasizes principles such as separation of powers, federalism, and the rule of law. It is a living document amended over time to address civil rights, federal authority, and government processes.
