How long was the rule of the dynasty that was active when the Rosetta Stone was inscribed?
Rosetta Stone The Rosetta Stone is a granodiorite stele, found in 1799, inscribed with three versions of a decree issued at Memphis, Egypt in 196 BC during the Ptolemaic dynasty on behalf of King Ptolemy V. The top and middle texts are in Ancient Egyptian using hieroglyphic script and Demotic script, respectively, while the bottom is in Ancient Greek. As the decree has only minor differences between the three versions, the Rosetta Stone proved to be the key to deciphering Egyptian hieroglyphs.
Great Karnak Inscription The Great Karnak Inscription is an ancient Egyptian hieroglyphic inscription belonging to the 19th dynasty Pharaoh Merneptah. A long epigraph, it was discovered at Karnak in 1828-29. According to Wilhelm Max Müller, it is "one of the famous standard texts of Egyptology... [and has been] ... one of the greatest desiderata of scholars for many years."