What four groups resisted the stamp act?

Four groups that resisted the Stamp Act included the Sons of Liberty, a secret organization that organized protests and boycotts; the Colonial Assemblies, which passed resolutions against the act; merchants and traders, who opposed the tax due to its impact on commerce; and ordinary citizens, who participated in demonstrations and public outcry against British taxation. These collective efforts contributed to the eventual repeal of the Stamp Act in 1766.