backa
Bačka (also Backa) is a geographical and historical region in the northern part of the Pannonian Plain, largely within the autonomous province of Vojvodina, Serbia. The region is bounded by the Danube to the south and the Tisa to the north and west, with its eastern boundary near the Danube’s delta region; the precise borders vary by source. It is administratively divided into North Bačka and South Bačka Districts.
The largest urban centers are Subotica (North Bačka) and Novi Sad (South Bačka), with Sombor and Bačka
The name Bačka derives from Slavic roots and historical usage; the region has been inhabited since prehistoric
After World War I, it became part of the Kingdom of Serbs, Croats and Slovenes (later Yugoslavia)