What is the primary purpose of the Constitution of the United States?

The primary purpose of the Constitution of the United States is to establish the framework for government. This foundational document outlines the structure of the government, delineating the roles and powers of the three branches: the legislative, executive, and judicial. It sets forth the principles of governance, including the separation of powers, checks and balances, and federalism, which are essential to maintaining a stable and functional government.

By providing a clear and organized structure, the Constitution not only defines the authority of governmental institutions but also protects individual liberties through the Bill of Rights. This framework is crucial for guiding the operations of government and ensuring that power is not concentrated in any one branch or individual, thus upholding the rule of law and democratic principles.

Other options, such as detailing the rights of states or serving as a historical document, represent aspects that may be included within the broader context of the Constitution, but they do not capture its primary purpose. Creating international treaties, while a function of government, is only a specific task that falls under the broader framework established by the Constitution.