Practice question

Original name at foundation was International Union for Protection of Nature abbreviated IUPN, reflecting early emphasis on protecting wildlife from extinction. By 1956, scope expanded beyond protection to include sustainable use and habitat management, prompting formal change to International Union for Conservation of Nature and Natural Resources, retaining IUCN abbreviation. Briefly from 1990 to 2008, publicity name World Conservation Union was used to improve public recognition, but legal name reverted to IUCN for historical continuity and brand identity. Mastery of this rule helps candidates differentiate closely related categories and avoid common errors in diversity questions.