What was the name of the nationwide U.S. celebration held for the 200th anniversary in 1976?

The nationwide U.S. celebration held for the 200th anniversary in 1976 was the United States Bicentennial.

The bicentennial commemorated 200 years since the Declaration of Independence was adopted in 1776. Events took place across the country and included parades, exhibitions, concerts, public ceremonies, commemorative objects, and historical programs.

Philadelphia was especially important because the Second Continental Congress met there and the Declaration is closely associated with Independence Hall. However, the 1976 celebration was national rather than limited to Pennsylvania.

America250 follows this earlier anniversary tradition but marks 250 years rather than 200. The names are easy to mix up: a centennial marks 100 years, a sesquicentennial 150, a bicentennial 200, and a semiquincentennial 250.