Cyrillic script consonants from the older Glagolitic alphabet for sounds not found in Greek. Tradition holds that Cyrillic and Glagolitic were formalized either by Saints Cyril and Methodius who brought Christianity to the southern Slavs, or by their disciples. Paul Cubberley posits that although Cyril may have codified and expanded Glagolitic, it was his students in the First Bulgarian Empire under Tsar Simeon the Great that developed Cyrillic from the Greek letters in the 890s as a more suitable script for church books. Later Cyrillic spread among other Slavic peoples, as well as among non-Slavic Vlachs. Cyrillic and Glagolitic were used for
Zaghawa alphabet Zaghawa alphabet The Zaghawa or Beria alphabet, "Beria Giray Erfe" ('Zaghawa Writing Marks'), is an indigenous alphabetic script proposed for the Zaghawa language (also known as Beria) of Darfur and Chad. In the 1950s, a Sudanese Zaghawa schoolteacher named Adam Tajir created an alphabet for the Zaghawa language, sometimes known as the camel alphabet, deriving its glyphs from the clan brands used for camels and other livestock. He copied the inventory of the Arabic script, so the system was not ideal for Zaghawa. In 2000, a Zaghawa veterinarian named Siddick Adam Issa adapted Tajir's script to a form which has