How Czechs and Slovaks differ religiously | Pew Research Center
Croats in Slovakia - Wikiwand
Slovak | people | Britannica
Why were the Hungarians unable to become a majority in the Kingdom of Hungary (even though they ruled it for more than 600 years), while the Turks successfully assimilated most ethnic groups
Slovak | people | Britannica
States/nations - Ms. Newell
Demographics of Slovakia - Wikipedia
Intolerance in Slovakia: The Oppressive, Draconian "Language Law"