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.
Late Period of ancient Egypt The Late Period of ancient Egypt refers to the last flowering of native Egyptian rulers after the Third Intermediate Period from the 26th Saite Dynasty into Achaemenid Persian conquests and ended with the conquest by Alexander the Great and establishment of the Ptolemaic Kingdom. It ran from 664 BC until 332 BC. With the Macedonian Greek conquest in the latter half of the 4th century BC, the age of Hellenistic Egypt began.