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
Manchu alphabet particles, written at the end of the question. The Jurchens of a millennium ago became the ancestors of the Manchus when Nurhaci united the Jianzhou Jurchens (1593–1618) and his son subsequently renamed the consolidated tribes as the "Manchu". Throughout this period, the Jurchen language evolved into what we know as the Manchu language. Its script has no relation to the Manchu alphabet, however, as their script was derived from the Khitan script, which was in turn derived from Chinese characters. Manchu alphabet The Manchu alphabet is the alphabet used to write the now nearly-extinct Manchu language; a similar script is