Here's why:
* Sulfur is naturally occurring: It's found in its elemental form in nature, meaning it existed long before any civilizations.
* Ancient knowledge: Humans have been aware of sulfur's properties for millennia. Its use in ancient times for things like medicine, dyes, and religious rituals is documented in various cultures, including ancient Egypt, China, and Greece.
Therefore, while we can't say one country "discovered" it, its properties and uses were understood and documented in various regions around the world long ago.