Cyrillic Script is an alphabetic writing system used for various languages across Eastern Europe and Central Asia, including Russian, Bulgarian, and Serbian. Developed in the 9th century, it was named after the Byzantine brothers Saint Cyril and Saint Methodius, who created the Glagolitic alphabet, a precursor to Cyrillic. The script has undergone several reforms and adaptations over the centuries, resulting in different versions tailored to specific languages. Today, it consists of 33 letters in its modern Russian form, making it distinct from the Latin alphabet. Cyrillic remains a vital part of cultural identity for many Slavic nations.