A report on Glagolitic script, Cyrillic script and Bulgarian language

The Early Cyrillic alphabet was developed during the 9th century AD at the Preslav Literary School in the First Bulgarian Empire during the reign of tsar Simeon I the Great, probably by disciples of Saint Cyril and Saint Methodius, the two brothers who created the earlier Glagolitic script.

Both the Glagolitic and Cyrillic alphabets were used until 13th-14th century in Bulgaria.

In the languages spoken now where Glagolitic was once used, the script is known as глаголица (romanized as glagolitsa and glagolica, respectively) in Bulgarian, Macedonian and Russian; glagoljica in Croatian and Serbian; hlaholice in Czech; głagolica in Polish; hlaholika in Slovak; and glagolica in Slovene.

Until 1945, Bulgarian orthography did not reveal this alternation and used the original Old Slavic Cyrillic letter yat (Ѣ), which was commonly called двойно е (dvoyno e) at the time, to express the historical yat vowel or at least root vowels displaying the ya – e alternation.

In 886 AD, the Bulgarian Empire introduced the Glagolitic alphabet which was devised by the Saints Cyril and Methodius in the 850s.

Slavic languages: Belarusian, Bulgarian, Macedonian, Russian, Rusyn, Serbo-Croatian (Standard Serbian, Bosnian, and Montenegrin), Ukrainian