The influential document established on July 4, 1776, is the Declaration of Independence. Drafted primarily by Thomas Jefferson, the Declaration boldly proclaimed the thirteen American colonies' intention to break free from British rule. It articulated the philosophical foundations of American democracy, asserting that all men are created equal and have unalienable rights to life, liberty, and the pursuit of happiness. The Declaration also outlined grievances against King George III, illustrating the colonies’ justification for seeking independence. This document not only marked the beginning of the United States as an independent nation but also served as a catalyst for other democratic movements worldwide.