The Rosetta Stone has the same inscription written in three languages; Ancient Egyptian hieroglyphs, Demotic, and Greek. Its discovery in 1799 was key to figuring out the hieroglyphic writing system, thus allowing modern historians to unlock the contents of many manuscripts and carvings that were previously unknown. The Rosetta Stone is currently located in the British Museum.
Coptic or Coptic Egyptian (Met Remenkēmi) is the latest stage of the Egyptian language, a northern Afro-Asiatic language spoken in Egypt until at least the 17th century. Egyptian began to be written in the Coptic alphabet – an adaptation of the Greek script with some letters inherited from Demotic – in the 1st century CE.
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Bob Ross The Joy of Painting S6E7 Arctic Beauty - YouTube