What is the Declaration of Independence primarily known for?

The Declaration of Independence is primarily known for being a founding document that declared the thirteen American colonies' independence from British rule. Drafted by Thomas Jefferson in 1776, it articulated the colonies' reasons for seeking independence and outlined the philosophical underpinnings of democracy, including the rights to life, liberty, and the pursuit of happiness. The document represents a pivotal moment in American history as it formalized the colonies' break from Britain and established the United States as a sovereign nation.

It is significant because it not only served as a statement of the colonies' grievances against King George III but also laid the foundation for the principles of democracy and government by consent. This declaration was a vital step in the American Revolution, inspiring other movements for independence and human rights around the world.

The other choices do not encapsulate the primary purpose of the Declaration of Independence: it is not a Bill of Rights document, a proposal for the Constitution, or a treaty. Each of those has its own distinct significance in U.S. history, but they do not relate to the main intent of the Declaration as a statement of independence from British authority.