The Rosetta Stone is an ancient Egyptian artifact that played a key role in deciphering Egyptian hieroglyphs. It was discovered in 1799 by French soldiers in the town of Rosetta (Rashid), Egypt, during Napoleon’s campaign.
The stone is a granodiorite slab inscribed with a decree issued in 196 BCE during the reign of Pharaoh Ptolemy V. What makes it significant is that the decree is written in three scripts:
  1. Hieroglyphs (used for religious and formal inscriptions)
  2. Demotic (the common script of daily life in ancient Egypt)
  3. Ancient Greek (the language of the ruling class at the time)
Since Greek was well understood, scholars—especially Jean-François Champollion in 1822—were able to use it as a reference to finally decode hieroglyphs, unlocking the secrets of ancient Egyptian writing.