Transdanubian Bulgaria

Transdanubian Bulgaria is a term used in Bulgarian historiography to denote the territories under the authority and control of the Bulgarian state north of the Danube during the Middle Ages. These lands include parts of modern Romania and Moldova, eastern Hungary, Vojvodina in Serbia, and Budjak and Yedisan in Ukraine. Transdanubian Bulgaria was held and controlled by the Bulgarian state, with periodic interruptions, from its formal foundation in 681 until its fall under Ottoman rule in 1422–1430. Contemporary Byzantine historians also used this designation for the territories north of the Danube.