America250 commemorates the 250th anniversary of which 1776 document's adoption?

America250 commemorates the 250th anniversary of the United States Declaration of Independence's adoption.

The Second Continental Congress adopted the document on July 4, 1776, in Philadelphia. It announced that the Thirteen Colonies regarded themselves as free and independent states rather than possessions of Great Britain.

The Declaration explained the colonies' grievances against King George III and presented a philosophical case for independence. Its language about natural rights and equality later influenced political movements around the world.

The document is often confused with the Constitution, but the two served different purposes. The Declaration announced and justified separation from Britain; the Constitution, written in 1787, established the framework of the United States government. America250's central historical milestone is the Declaration's adoption, not the Constitution's signing or ratification.