July 15, 1799 –
The Rosetta Stone is an Ancient Egyptian artifact which was instrumental in advancing modern understanding of hieroglyphic writing. The stone is a Ptolemaic era stele with carved text. The text is made up of three translations of a single passage, written in two Egyptian language scripts (hieroglyphic and Demotic), and in classical Greek.
It was created in 196 BC, discovered by the Napoleonic expeditionary forces in 1799 at Rashid (a harbor on the Mediterranean coast in Egypt which the French referred to Rosetta) and contributed greatly to the decipherment of the principles of hieroglyphic writing in 1822 by the British polymath Thomas Young and the French scholar Jean-François Champollion.
Feel free to impress your friends with this bit of knowledge.
And so it goes
