Cyrillic script - Wikipedia
https://en.wikipedia.org/wiki/Cyrillic_scriptAmong the general public, it is often called "the Russian alphabet," because Russian is the most popular and influential alphabet based on the script. Some Bulgarian intellectuals, notably Stefan Tsanev , have expressed concern over this, and have suggested that the Cyrillic script be called the "Bulgarian alphabet" instead, for the sake of historical accuracy. [27]
Russian alphabet - Wikipedia
en.wikipedia.org › wiki › Russian_alphabetInitially an old variant of the Bulgarian alphabet, it became used in the Kievan Rus' since the 10th century to write what would become the Russian language. The modern Russian alphabet consists of 33 letters. It has twenty consonants ( б , в , г , д , ж , з , к , л , м , н , п , р , с , т , ф , х , ц , ч , ш , щ ), ten ...