The famous document drawn up in Philadelphia in 1787 is the United States Constitution. This foundational legal document established the framework for the federal government of the United States, outlining the separation of powers, the system of checks and balances, and the rights of citizens. It was drafted during the Constitutional Convention, where delegates from various states gathered to address the weaknesses of the Articles of Confederation. Ratified in 1788, the Constitution has since been amended 27 times and remains a living document, influencing the legal and political landscape of the U.S. and serving as a model for other nations.