What required colonists to pay for an official stamp or seal whenever they bought paper items?

The requirement for colonists to pay for an official stamp or seal on paper items was part of the Stamp Act of 1765, enacted by the British Parliament. This law aimed to generate revenue from the colonies to help cover the costs of British troops stationed in North America. The act provoked widespread protest among colonists, who viewed it as taxation without representation, contributing to rising tensions that eventually led to the American Revolution.