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When was the last known Egyptian hieroglyphic inscription made?
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hieroglyphic writing
Hieroglyphics on a temple wall at Karnak, Egypt.
The last known use of Egyptian hieroglyphic writing is a graffito found on the island of Philae. This inscription is dated to August 24, 394 CE, during the reign of the Roman emperor Theodosius I.12
Following the rise of Christianity in the 2nd and 3rd centuries CE, the use of the traditional hieroglyphic script declined rapidly as the Egyptian language began to be written using an adapted version of the Greek alphabet, a system known as Coptic.12