The term was coined in the Habsburg Monarchy after the Treaty of Küçük Kaynarca (1774) in order to designate an area on the lower Danube with a common geopolitical situation.
Nimetus võeti Habsburgide monarhias kasutusele pärast Küçük Kaynarca rahu (1774), et määratleda Doonau alamjooksu ala ühises geopoliitilises olukorras.