What was the 1926 Philadelphia exposition called that commemorated the 150th anniversary before America250?

The 1926 Philadelphia exposition that commemorated the 150th anniversary was called the Sesquicentennial Exposition.

Its full name was the Sesqui-Centennial International Exposition, and it marked 150 years since the adoption of the Declaration of Independence. The event also looked back to Philadelphia’s earlier Centennial Exposition of 1876, creating a direct chain of anniversary celebrations leading toward America250.

The exposition opened on July 4, 1926, during Calvin Coolidge’s presidency. It included exhibitions, architectural projects, public ceremonies, and displays designed to celebrate American history, industry, and culture. The word “sesquicentennial” means a 150th anniversary, just as “bicentennial” means 200 years and “semiquincentennial” means 250 years.

The 1926 event is sometimes shortened to “the Sesqui.” That nickname identifies the same exposition but is not its formal title. Philadelphia’s repeated role in these commemorations reflects the city’s importance in the history of American independence.