The correct answer to this open question is the following.
The United States Constitution can be compared to a set of commands or ancient codes such as the Hammurabi code or the Justinian code, but with modern concepts and terminology that serves as the foundation of the government of the United States.
After the Articles of Confederation left a weak central government, the delegates met at the Constitutional Convention held in the city of Philadelphia, Pennsylvania in the summer of 1787 to create a new Constitution that served as the new set of laws for the United States.
After so much debate and arguments, the founding fathers drafted the new Constitution that established a division of powers in the federal government through the system of checks and balances.