After the French and Indian War, Britain had massive war debts; one solution was to directly tax the Thirteen Colonies. After a series of acts were passed and revoked, the Sons of Liberty and the Colonial Assassins in Boston boarded ships from the British East India Company docked at Griffin's Wharf and threw hundreds of tea crates into the sea. This event became known as the Boston Tea Party, which is commonly accepted as the start of the Revolution.
In 1775, the American Revolutionary War broke out with the Battles of Lexington and Concord, when John Pitcairn led troops to arrest the prominent Patriots Samuel Adams and John Hancock. Paul Revere and the Assassin Ratonhnhaké:ton warned them to leave, meaning there was no one to order the Colonial militia to stand down against Pitcairn's forces.
In 1776, the Continental Congress wrote and signed the Declaration of Independence. This significant event was the official founding of the United States of America. However, independence from Britain was not yet obtained.
In 1783, the Treaty of Paris was signed, and the United States had officially gained their independence.