The First Continental Congress was a meeting of delegates of 12 of the Thirteen Colonies held from September 5 to October 26, 1774 at Carpenters' Hall in Philadelphia at the beginning of the American Revolution. The meeting was organized by the delegates after the British Navy implemented a blockade of Boston Harbor and the Parliament of Great Britain passed the punitive Intolerable Acts in response to the Boston Tea Party.

The Second Continental Congress was the late-18th-century meeting of delegates from the Thirteen Colonies that united in support of the American Revolution and the Revolutionary War, which established American independence from the British Empire. The Congress constituted a new federation that it first named the United Colonies, and in 1776, renamed the United States of America. The Congress began convening in Philadelphia, on May 10, 1775, with representatives from 12 of the 13 colonies, after the Battles of Lexington and Concord.