The Intolerable Acts were the American Patriots' term for a series of punitive laws passed by the British Parliament in 1774 after the Boston Tea Party. They were meant to punish the Massachusetts colonists for their defiance of throwing a large tea shipment into Boston Harbor in reaction to being taxed by the British. In Great Britain, these laws were referred to as the Coercive Acts.
The acts took away Massachusetts' self-government and historic rights, triggering outrage and resistance in the Thirteen Colonies. They were key developments in the outbreak of the American Revolution in 1775.
Four of the acts were issued in direct response to the Boston Tea Party of December 1773; the British Parliament hoped these punitive measures would, by making an example of Massachusetts, reverse the trend of colonial resistance to parliamentary authority that had begun with the 1764 Sugar Act. A fifth act, the Quebec Act, enlarged the boundaries of what was then the Province of Quebec and instituted reforms generally favorable to the French Catholic inhabitants of the region; although unrelated to the other four Acts, it was passed in the same legislative session and seen by the colonists as one of the Intolerable Acts. The Patriots viewed the acts as an arbitrary violation of the rights of Massachusetts, and in September 1774 they organized the First Continental Congress to coordinate a protest. As tensions escalated, the American Revolutionary War broke out in April 1775, leading in July 1776 to the declaration of an independent United States of America.
Relations between the Thirteen Colonies and the British Parliament slowly but steadily worsened after the end of the Seven Years' War (French and Indian War) in 1763. The war had plunged the British government deep into debt, and so the British Parliament enacted a series of measures to increase tax revenue from the colonies. Parliament believed that these acts, such as the Stamp Act of 1765 and the Townshend Acts of 1767, were legitimate means of having the colonies pay their fair share of the costs of maintaining the British Empire. Although protests led to the repeal of the Stamp and Townshend Acts, Parliament adhered to the position that it had the right to legislate for the colonies "in all cases whatsoever" in the Declaratory Act of 1766.