Pannonia
pn//pəˈnoʊ.ni.ə//Pannonien
(historical) A geographic region and former province of the Roman Empire in central-eastern Europe, existing as a single province from c. 9 AD to 107 AD and as multiple related provinces until 433 AD; located in modern western Hungary, western Slovakia, eastern Austria, northern Croatia, northwestern Serbia, northern Slovenia and northern Bosnia and Herzegovina.