That year Bosnia became part of the Kingdom of Serbs, Croats, and Slovenes and divided into several banovinas (regional administrative units), namely parts of Vrbas, Drina, Zeta and Croatia banovinas.
In that particular year, Bosnia joined the Kingdom of Serbs, Croats, and Slovenes and was distributed into various regional administrative units, such as portions of the Vrbas, Drina, Zeta, and Croatia banovinas.