What was henry’s reason for protesting the stamp act

The reason for the protest was because the controversial act forced colonists to buy a British stamp for every piece of printed paper that they had obtained.  This included Ship's papers, legal documents, licenses, newspapers, other publications, and even playing cards were taxed.

classical republicanism, also known as civic humanism, is a form of republicanism  developed in the renaissance inspired by the governmental forms and writings of  classical  antiquity, especially such  classical  writers as aristotle, polybius, and cicero.