The Fourth of July is the day in which the United States of America celebrates its independence from Britain. It is celebrated by gathering with friends and family, lighting fireworks and having BBQs. It is also known as "Independence Day".
Regular Websites
PBS puts forth information about the history of Independence Day, patriotic reflections and resources about fireworks and fun activities. - A Capital Fourth
http://www.pbs.org/capitolfourth/
Contains maps of early America, videos and educational resources about the history of the United States. - History.com: Fourth of July
http://www.history.com/topics/july-4th
The US government offers information about the history of this holiday as well as recipes, a quiz, celebrations in different US locations and safety tips. - USA.gov: Independence Day
http://www.usa.gov/Topics/Independence_Day.shtml