The discovery of the Rosetta Stone in 1799 was pivotal in deciphering Egyptian hieroglyphics. This granodiorite stele inscribed with texts in three scripts—Greek, Demotic, and hieroglyphics—was key to understanding the ancient Egyptian writing system. Jean-François Champollion successfully deciphered the hieroglyphs in the 1820s, largely by comparing them to the Greek text, which was already understood. The stone provided scholars with the necessary linguistic parallels to unlock the meanings of hieroglyphic symbols, allowing for significant advancements in Egyptology and the understanding of ancient Egyptian culture and history.