"Those were Vlachs, not Serbs"
> MS Encarta:
Slavonia was under Turkish occupation for more than a century, ending in 1699. At that time, it was transferred to the Austro-Hungarian Empire. In the 18th century, under Empress Maria Theresa, Serbs were invited into parts of Croatia including Slavonia, in order to garrison the frontier with the Ottoman Empire. Except for a brief interval during the Napoleonic Wars, when it was incorporated into the so-called Illyrian provinces, Slavonia remained under Habsburg rule until 1918, when it became part of the new Kingdom of Serbs, Croats, and Slovenes, later called Yugoslavia. During World War II it was part of the fascist Independent State of Croatia.