Which document established the framework for the U.S. government?

The United States Constitution is the foundational document that established the framework for the U.S. government. Ratified in 1788, it outlines the structure of the federal government, including the three branches—legislative, executive, and judicial—and delineates their powers and responsibilities. The Constitution not only provides a system of checks and balances to prevent any single branch from becoming too powerful but also incorporates essential principles like separation of powers and federalism.

The document includes provisions for the amendment process, allowing it to adapt to changing societal needs and issues over time. This adaptability has been vital for the Constitution's longevity and relevance in governing the nation.

In contrast, the Declaration of Independence serves as a statement of principles declaring the colonies' separation from British rule but does not establish a government structure. The Bill of Rights, consisting of the first ten amendments to the Constitution, guarantees individual freedoms and rights but is established within the framework provided by the Constitution itself. The Articles of Confederation, while an early attempt at uniting the states under a central government, ultimately proved to be ineffective and were replaced by the Constitution.