The historical event noted for the establishment of the modern United States is the American Revolution, which culminated in the Declaration of Independence in 1776. This revolution was driven by colonial dissatisfaction with British rule, leading to a fight for self-governance and individual liberties. The successful outcome established a new nation premised on democratic ideals and the rule of law. Following the Revolution, the U.S. Constitution and the Bill of Rights further defined the framework of American governance and the protection of citizens' rights, paving the way for the development of a robust democratic society.