238 years ago today, September 17, 1787 (August 6, 1787 in the lunar calendar), it was approved by representatives at the U.S. Constitutional Convention held in Philadelphia. The Constitution of the United States, referred to as the Constitution of the United States, is the fundamental law of the United States. The Constitution was approved by delegates at the U.S. Constitutional Convention held in Philadelphia on September 17, 1787, and was ratified shortly thereafter by a special convention of the 13 then-U.S. states. According to this Constitution, the United States becomes a federal state composed of sovereign states, and there is also a federal government to serve the operation of the federation. From then on, the federal system replaced the looser federal system that existed based on the Articles of Confederation. In 1789, the U.S. Constitution came into effect. This constitution provided a successful model for the formulation of written constitutions in many countries in the future. Comment: The Constitution that affects the world so far