How did the settlement of the Magyars in Hungary affect Slavic languages?

The settlement of the Magyars in the Carpathian Basin in the late 9th century significantly altered the linguistic and political landscape for Slavic languages and their speakers in the region.

The arrival of the Magyars effectively separated the West Slavic ancestors of the modern Slovaks, who lived north of the Danube River, from the South Slavs to the south. This geographic wedge disrupted the continuity of Slavic populations and their linguistic development in the area. Furthermore, the Magyar invasions led to the disappearance of the Slavic liturgy that had been introduced to the region during the 9th-century mission to Moravia.1

Following their conquest, the Magyars subjugated the resident Slavic populations. Over the subsequent centuries, the Hungarian language—a member of the Uralic languages—exerted significant pressure on Slavic cultures within the region, particularly through periods of hegemony and policies such as Magyarization, which sought to promote the Hungarian language in education and administration. Despite these pressures, Slavic languages like Slovak persisted as distinct linguistic identities.231