In the United States, the 4th of July is a federal holiday commemorating the adoption of the Declaration of Independence on July 4, 1776. The day is usually celebrated with parades, fireworks, and barbecues.Some fun facts about the 4th of July include:- The Declaration of Independence was actually signed on August 2, 1776.- The first 4th of July celebration was held in Philadelphia in 1777.- In 1781, the Continental Congress made the 4th of July an official holiday.- The largest 4th of July celebration in the world is in New York City, where an estimated 3 million people attend the annual Macy's Fourth of July fireworks display.- The oldest continuously-running 4th of July celebration in the United States is in Bristol, Rhode Island, where the festivities have been held annually since 1785.- The town of Independence, Missouri, is the self-proclaimed most patriotic city in America" and hosts a week-long celebration leading up to the 4th of July.- According to a survey conducted by the National Retail Federation, Americans are expected to spend an average of $73.23 on 4th of July celebrations in 2020."