when was rosetta stone founded
This Day in History: 07/19/1799 - Rosetta Stone Found. In a This Day in History video, learn that on July 19, 1799, the Rosetta Stone unlocked the language of the pharaohs. For 14,000 years, no one had been able to read Egyptian hieroglyphs until Napoleon's army stumbled upon a clue: a 4x2 tablet with three languages inscribed on it.