Which document established the structure of the US government?

The US Constitution established the structure of the United States government. It was ratified in 1788 and created a framework that defines the separation of powers among the three branches of government: the legislative, executive, and judicial branches. It outlines the roles and responsibilities of each branch, including how laws are made, enforced, and interpreted.

Additionally, the Constitution includes provisions for checks and balances, ensuring that no one branch becomes too powerful. It serves as the supreme law of the land, providing a stable foundation for the functioning of the government and protecting individual rights through subsequent amendments, most notably the Bill of Rights.

The other documents mentioned, while significant in American history, addressed different aspects. The Declaration of Independence articulated the colonies' reasons for seeking independence from British rule but did not establish government structure. The Articles of Confederation served as the first constitution but created a weak central government that proved ineffective. The Bill of Rights, which comprises the first ten amendments to the Constitution, specifically protects individual liberties but does not lay out the government's structure itself.