The Stamp Act was passed by British Parliament on March 22, 1765. It raised taxes in the American colonies, and colonists became angry about being taxed without representation in Parliament, according to the Lilly Library at Indiana University Bloomington.
The Stamp Act did not refer to a tax on postal stamps but to a tax represented by a stamp on newspapers, playing cards, diplomas and legal documents. The money raised was intended to support the continued presence of British troops in North America. Some colonists reacted by boycotting British goods and forming organizations such as the Sons and Daughters of Liberty, explains the University of Houston's Digital History website. Riots also took place. In October 1765, a group of delegates from the colonies held a meeting in New York City to prepare a statement against the Stamp Act.
Parliament repealed the Stamp Act in 1766. Yet this did little to quell unrest in the American colonies, since at the same time, Parliament passed the Declaratory Act, asserting full legislative power of Parliament and the king over the colonies. Second president John Adams viewed the Stamp Act and subsequent resistance as an important moment in his own life and in sparking an interest in liberty in the colonies, notes the University of Houston's Digital History website.