Which U.S. anniversary in 1976 was the direct predecessor to America250?

The United States Bicentennial in 1976 was the direct predecessor to America250.

The Bicentennial marked 200 years since the Declaration of Independence. Its official observance extended across the country and included public ceremonies, educational programs, exhibitions, parades, and specially designed objects.

The 1976 celebration became one of the largest national commemorations in American history. It was held during a period of major social and political change, so the anniversary combined patriotic celebration with debates about the country’s achievements and unfinished goals.

America250 follows the same anniversary sequence but marks 250 years rather than 200. In anniversary terminology, a centennial is 100 years, a sesquicentennial is 150 years, a bicentennial is 200 years, and a tricentennial is 300 years.