A country's Independence Day is the day on which its people celebrate their independence from another country that ruled them in the past. In the United States, Independence Day is celebrated each year on 4th July. He died on Independence Day, 1831. July 4, celebrated in the United States to commemorate the adoption in 1776 of the Declaration of Independence. Also called Fourth of July. or Fourth of July Anniversary of the adoption of the U.S. Declaration of Independence by the Second Continental Congress (July 4, 1776). It is the greatest secular holiday in the country. Celebrating the day became common only after the War of 1812. Thereafter, civic-minded groups worked to link the ideals of democracy and citizenship to the patriotic spirit of the day