The signing of the Declaration of Independence, July 4, 1776.
From Simple English Wikipedia:
In the United States, Independence Day, commonly known as the Fourth of July or the Fourth, is a federal holiday commemorating the Declaration of Independence on July 4, 1776, when the people of America declared their independence from Great Britain.
On Independence Day there are many events, such as fireworks, parades, barbecues, carnivals, picnics, concerts, baseball games, political speeches and ceremonies, and various other public and private events. These events celebrate the history, government, and traditions of the United States.
Families often celebrate Independence Day by having a picnic or barbecue. People may also do fun and relaxing things, such as swimming, fishing, boating, sunbathing, playing sports, or just kicking back and relaxing. Decorations are generally colored red, white, and blue, the colors of the American flag. Parades often are in the morning, while fireworks displays occur in the evening.
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