The discovery of the Rosetta Stone was significant because it provided the key to deciphering ancient Egyptian hieroglyphs. Found in 1799 by French soldiers during Napoleon’s campaign in Egypt, the stone features the same text inscribed in three scripts: Greek, Demotic, and hieroglyphic. Scholars used the Greek inscription to unlock the meanings of the hieroglyphs, which had been a long-lost language for centuries. The breakthrough was pivotal for Egyptology, allowing historians to understand not only language but also the culture, history, and religion of ancient Egypt. It marked a critical advancement in the study of ancient civilizations.