Slavonia

The centre of the industry has been the oak forest of Slavonia.
Animal Proteins|Hugh Garner Bennett
Bishop Strossmayer, coming from a family which had settled at the sprawling town of Osiek, in Slavonia, did what he could.
The Birth of Yugoslavia, Volume 1|Henry Baerlein
A full account of this language, and its literature, is given under Servia and Croatia-Slavonia.
Encyclopaedia Britannica, 11th Edition, Volume 4, Slice 3|Various
As regards sex, for every 1000 men there were 1011 women in Hungary, and 998 women in Croatia-Slavonia.
Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 8|Various

The culture of the silkworm is chiefly carried on in the south, and in Croatia-Slavonia.
Encyclopaedia Britannica, 11th Edition, Volume 13, Slice 8|Various

British Dictionary definitions for Slavonia

Slavonia

/ (sləˈvəʊnɪə) /

noun

a region in Croatia, mainly between the Drava and Sava Rivers

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012