The document provides an overview of the history and development of the U.S. Constitution. It discusses the weaknesses of the Articles of Confederation that led to calls for a stronger national government. At the 1787 Philadelphia Convention, delegates debated plans for a new framework of government, grappling with issues of representation and slavery. This resulted in the separation of powers among three branches and a system of checks and balances. After ratification, the Bill of Rights was added to further protect individual liberties.