Bulgarian lands across the Danube

In Bulgarian historiography, the Bulgarian lands across the Danube, also called Transdanubian Bulgaria (Bulgarian: Отвъддунавска България), refer to territories under the control of the Bulgarian Empire north of the Danube. These territories today cover the territory of Romania and Moldova, eastern Hungary, Vojvodina in Serbia and Budjak in Ukraine.^[1][2][3]

In the Middle Ages the Bulgarian Empire controlled vast areas to the north of the river Danube (with interruptions) from its establishment in 681 to its fragmentation in 1371-1422. These lands were called by contemporary Byzantine historians Bulgaria across the Danube. ^[4] Original information for the centuries-old Bulgarian rule there is scarce as the archives of the Bulgarian rulers were destroyed and little is mentioned for this area in Byzantine or Hungarian manuscripts.