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
S'gaw Karen alphabet S'gaw Karen alphabet The Karen script ( ) is an abugida used for writing Karen. It was derived from the Burmese script in the early 19th century, and ultimately from either the Kadamba or Pallava alphabet of South India. The S'gaw Karen alphabet is also used for the liturgical languages of Pali and Sanskrit. The Karen alphabet was created by American missionary Jonathan Wade in the 1830s, based on the S'gaw Karen language; Wade was assisted by a Karen named Paulah. The consonants and most of the vowels are adopted from the Burmese alphabet; however the Karen pronunciation of the