Modern English
Modern English (sometimes New English or NE as opposed to Middle English and Old English) is the form of the English language spoken since the Great Vowel Shift in England, which began in the late 14th century and was completed in roughly 1550.
Early Cyrillic alphabet
The Early Cyrillic alphabet is a writing system that was developed in the First Bulgarian Empire during the late 9th century on the basis of the Greek alphabet The objective was to make it possible to have Christian service in Slavic tongue, instead of in Greek, which locals did not understand, and to bring Bulgarian subjects closer to the cultural influence of Christianity, the official religion of the Byzantine Empire. It was used by Slavic peoples in South East, Central and Eastern Europe.