The Stamp Act Congress was convened on October 7, 1765, to address the passage of the Stamp Act by Parliament on March 8, 1765. The congress’s delegates responded to the act on October 19, 1765, by approving a Declaration of Rights (including fourteen resolutions) and several petitions denying Parliament’s authority to tax the thirteen colonies. The Stamp Act Congress and its resolutions helped lead to the act’s repeal in March 1766. They also led the colonists to focus on the idea of constitutional limitations on parliamentary authority, a concept that contributed to the American Revolution.