What significant event is commemorated by the Fourth of July?

The Fourth of July commemorates the adoption of the Declaration of Independence in 1776, which is a pivotal moment in American history. On this date, the thirteen American colonies declared their independence from British rule, marking the birth of the United States of America. The Declaration, primarily authored by Thomas Jefferson, articulated the colonies' reasons for seeking independence and outlined the principles of individual liberty and government by consent of the governed. This foundational document not only signified a break from British authority but also established ideological principles that continue to influence democracy and governance today.

In contrast, the other events associated with the choices represent significant milestones in American history, but they do not align with what the Fourth of July specifically commemorates. For instance, the signing of the Constitution occurred several years later, in 1787, establishing the framework for the U.S. government. The end of the Revolutionary War in 1783 marked the conclusion of military hostilities but was not the date of declaration itself. Lastly, the ratification of the Bill of Rights in 1791 focused on guaranteeing individual freedoms but was not a declaration of independence. Hence, the adoption of the Declaration of Independence stands out as the event that the Fourth of July specifically celebrates.