March 18, 1766:
Parliament repeals the Stamp Act.
After four months of widespread protest in America, the British Parliament repeals the Stamp Act, a taxation measure enacted to raise revenues for a standing British army in America.
The Stamp Act was passed on March 22, 1765, leading to an uproar in the colonies over an issue that was to be a major cause of the Revolution: taxation without representation. Enacted in November 1765, the controversial act forced colonists to buy a British stamp for every official document they obtained. The stamp itself displayed an image of a Tudor rose framed by the word “America” and the French phrase Honi soit qui mal y pense–“Shame to him who thinks evil of it.”
The colonists, who had convened the Stamp Act Congress in October 1765 to vocalize their opposition to the impending enactment, greeted the arrival of the stamps with outrage and violence. Most Americans called for a boycott of British goods, and some organized attacks on the customhouses and homes of tax collectors. After months of protest, and an appeal by Benjamin Franklin before the British House of Commons, Parliament voted to repeal the Stamp Act in March 1766. However, the same day, Parliament passed the Declaratory Acts, asserting that the British government had free and total legislative power over the colonies.
Taken from: https://www.history.com/this-day-in-history/parliament-repeals-the-stamp-act