Fireworks have been a part of 4th of July celebrations since the earliest observances of the holiday. John Adams, one of the founding fathers, wrote in a letter to his wife Abigail that Independence Day should be celebrated 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." The first organized 4th of July celebration occurred in Philadelphia in 1777, where fireworks were a key part of the festivities. Fireworks symbolize the spirit of the American Revolution and are a reminder of the battles fought for independence. The bright and colorful displays evoke a sense of joy, pride, and patriotism among Americans as they come together to celebrate their nation's birth.