What did the rosetta stone us understand egyptian culture? anybody? ? pl

The Rosetta Stone was in 3 languages Greek hieroglyphics and and demotic

The Rosetta Stone helped researchers understand Egyptian hieroglyphics. Hieroglyphic writing died out in Egypt in the fourth century C.E. Over time, the knowledge of hieroglyphs was lost, until the discovery of the Rosetta Stone in 1799 and its subsequent decipherment.