The Stamp Act refers to a tax law passed by the British Parliament in 1765 that required American colonists to pay a tax on various paper materials, such as legal documents, newspapers, and playing cards. However, there are several synonyms that can be used to refer to this infamous act, including the Revenue Act, the Stamp Duty, the American Duties Act, and the Stamp Act of 1765. The Stamp Act played a crucial role in American history, as it sparked widespread protests and boycotts among the colonists, ultimately leading to the American Revolution and the eventual independence of the United States.