When and where was the United States Constitution written?

The United States Constitution was written in Philadelphia in 1787 during the Constitutional Convention. This gathering brought together delegates from the original thirteen states to address the weaknesses of the Articles of Confederation and to create a new framework for governance. The year is significant because it marks the beginning of a new system of government that established the foundational structure and principles of the U.S. government, including the separation of powers, checks and balances, and the rights of the individual.

Philadelphia was chosen for its central location and its status as a significant political and cultural hub at the time. The convention convened on May 25, 1787, and concluded on September 17, 1787, when the Constitution was signed by the delegates. This pivotal moment in American history laid the groundwork for the Constitution's ratification process, ultimately leading to the establishment of the current legal framework governing the United States.