Articles of Confederation: The Articles of Confederation were an earlier version of governing principles adopted by the United States before the ratification of the Constitution. They provided limited powers to Congress, resulting in a weak central government.
Bill of Rights: The Bill of Rights refers to the first ten amendments added to the U.S. Constitution. These amendments protect individual liberties such as freedom of speech, religion, and due process.
Preamble: The Preamble is an introductory statement at the beginning of the U.S. Constitution that outlines its purpose and goals, including establishing justice, ensuring domestic tranquility, providing for common defense, promoting general welfare, and securing liberty.