 Serb migration into this region peaked during the Great Serb Migrations of 1690 and 1737–39.Similarly, Venetian Republic rule in Istria and in Dalmatia, following the Fifth and the Seventh Ottoman–Venetian Wars ushered gradual growth of Italian speaking population in those areas.Following the collapse of Austria-Hungary in 1918, the Hungarian population declined, especially in the areas north of the Drava river, where they represented the majority before World War I.