The event celebrated as the beginning of the fight for American independence is the signing of the Declaration of Independence on July 4, 1776. This pivotal document, drafted primarily by Thomas Jefferson, articulated the colonies' grievances against British rule and proclaimed their right to self-governance. It drew upon Enlightenment ideals of individual liberty and social contract theory, asserting that governments derive their power from the consent of the governed. The Declaration united the thirteen colonies in their struggle against British oppression and galvanized support for the Revolutionary War. Its enduring legacy continues to influence democratic movements worldwide, symbolizing the pursuit of freedom.