What act taxed colonists without there consent?

The Stamp Act of 1765 taxed colonists without their consent by requiring them to purchase special stamped paper for legal documents, newspapers, and other printed materials. This was one of the first direct taxes imposed by Britain on the American colonies, leading to widespread protests and the rallying cry of "no taxation without representation." The act was eventually repealed in response to colonial opposition, but it heightened tensions between Britain and the colonies.