The Rosetta Stone is immensely significant for understanding ancient languages as it features the same text written in three scripts: Greek, Demotic, and hieroglyphics. Discovered in 1799, it provided the crucial key for scholars trying to decipher Egyptian hieroglyphics, which had been undecipherable for nearly 1,500 years. Jean-François Champollion was the first to successfully translate the hieroglyphs, allowing historians and linguists to access a wealth of knowledge about ancient Egyptian culture, governance, and religion. This breakthrough opened up new avenues for understanding not only ancient Egypt but also the development of writing systems in human history.