Independence Day, known colloquially as the Fourth of July, is a federal holiday in the United States which commemorates the ratification of the Declaration of Independence by the Second Continental Congress on July 4, 1776, establishing the United States of America.

In 1870, the U.S. Congress made July 4th a federal holiday; in 1941, the provision was expanded to grant a paid holiday to all federal employees. Over the years, the political importance of the holiday would decline, but Independence Day remained an important national holiday and a symbol of patriotism.