The Fourth of July from Wiki

In the United States, Independence Day, commonly known as the Fourth of July, is a federal holiday commemorating the adoption of the Declaration of Independence on July 4, 1776, declaring independence from the Kingdom of Great Britain. Independence Day is commonly associated with fireworks, parades, barbecues, carnivals, fairs, picnics, concerts, baseball games, political speeches and ceremonies, and various other public and private events celebrating the history, government, and traditions of the United States. Independence Day is the national day of the United States.

Background

During the American Revolution, the legal separation of the American colonies from Great Britain occurred on July 2, 1776, when the Second Continental Congress voted to approve a resolution of independence that had been proposed in June by Richard Henry Lee of Virginia. After voting for independence, Congress turned its attention to the Declaration of Independence, a statement explaining this decision, which had been prepared by a Committee of Five, with Thomas Jefferson as its principal author. Congress debated and revised the Declaration, finally approving it on July 4. A day earlier, John Adams had written to his wife Abigail:

“The second day of July, 1776, will be the most memorable epoch in the history of America. I am apt to believe that it will be celebrated by succeeding generations as the great anniversary festival. It ought to be commemorated as the day of deliverance, by solemn acts of devotion to God Almighty. It ought to be solemnized with pomp and parade, with shows, games, sports, guns, bells, bonfires, and illuminations, from one end of this continent to the other, from this time forward forever more.”

Adams' prediction was off by two days. From the outset, Americans celebrated independence on July 4, the date shown on the much-publicized Declaration of Independence, rather than on July 2, the date the resolution of independence was approved in a closed session of Congress.

One of the most enduring myths about Independence Day is that Congress signed the Declaration of Independence on July 4, 1776. The myth had become so firmly established that, decades after the event and nearing the end of their lives, even the elderly Thomas Jefferson and John Adams had come to believe that they and the other delegates had signed the Declaration on the fourth. Most delegates actually signed the Declaration on August 2, 1776. In a remarkable series of coincidences, both John Adams and Thomas Jefferson, two founding fathers of the United States and the only two men who signed the Declaration of Independence to become president, died on the same day: July 4, 1826, which was the United States' 50th anniversary. President James Monroe died exactly five years later, on July 4, 1831, but he was not a signatory to the Declaration of Independence.

http://en.wikipedia.org/wiki/Independence_Day_(United_States)