Church Slavonic language
In 1491 Drohobych, published one of the first books in Church Slavonic language "Осьмогласник", ("Octoechos "or "Antiphonal") and the first books in Ukrainian "Часословець" ("Horologion" or "Book of Hour"), "Тріодь пісна" and " "Тріодь цвітна"" (Triodion). All these publications built the foundation for the further development of the Ukrainian cultural identity.