The U.S. event celebrated on July 4th is the Declaration of Independence.

This date marks the adoption of the Declaration in 1776, when the thirteen American colonies declared their independence from British rule. The Declaration, primarily authored by Thomas Jefferson, outlined the colonies' grievances against the British monarchy and affirmed the principles of individual rights and self-governance. Independence Day, commonly known as the Fourth of July, is celebrated with fireworks, parades, and various patriotic events across the nation, symbolizing freedom and the birth of the United States.