Which document’s 250th anniversary is the central focus of the United States Semiquincentennial?

The Declaration of Independence is the document whose 250th anniversary is the central focus of the United States Semiquincentennial.

The Second Continental Congress adopted the Declaration in 1776. It announced that the thirteen American colonies regarded themselves as independent states and explained their reasons for separating from Great Britain. America250’s 2026 milestone is measured from that founding-era declaration.

The commemoration does not mean that every part of the United States’ constitutional history began on the same date. The Articles of Confederation were adopted later, the Constitution was drafted in 1787, and the Bill of Rights was ratified in 1791. Those documents are important neighboring milestones, but none is the anniversary’s central reference point.

The Declaration’s language and legacy have been interpreted in many ways over time. For trivia purposes, the key distinction is simple: America250 counts 250 years from the Declaration’s adoption in 1776, making 2026 the semiquincentennial year.