How did Saints Cyril and Methodius influence Slavic language and culture?

Saints Cyril and Methodius, often called the "Apostles of the Slavs," profoundly influenced Slavic language and culture by providing the means for Slavic peoples to develop a written tradition and a vernacular liturgy.1

Their primary contributions included:

• Creation of a Writing System: Around 860 CE, they invented the Glagolitic alphabet to represent the phonetic peculiarities of the Slavic tongue. This script was later adapted by their disciples into the Cyrillic alphabet, which remains a foundational cultural feature for many Slavic nations today.123
• Vernacular Liturgy: By translating the Bible and liturgical texts into Old Church Slavonic, they enabled the use of the Slavic language in religious services, a practice that received formal authorization from the papacy.1
• Cultural Consolidation: Their mission helped consolidate the Eastern tradition of Christianity among the Slavs. Their work laid the groundwork for a shared cultural and religious identity that spread across the Balkans and into regions as distant as Russia.31

Their legacy remains central to the cultural heritage of Slavic-speaking peoples, including those in the region of North Macedonia.23