Kajkavian is closely related to Slovene - and to Prekmurje Slovene in particular. Higher amounts of correspondences between the two exist in inflection and vocabulary. The speakers of the Prekmurje dialect are Slovenes and Hungarian Slovenes who belonged to the Archdiocese of Zagreb during the Habsburg era (until 1918). They used Kajkavian as their liturgical language, and by the 18th century, Kajkavian had become the standard language of Prekmurje. Moreover, literary Kajkavian was also used in neighboring Slovene Styria during the 17th and 18th centuries, and in parts of it, education was conducted in Kajkavian.