Wanting to resolve the conflict peacefully, the Allied victors in World War I divided southeastern Carinthia into two zones, "A" in the south and "B" in the north. A two-stage referendum was to be held to determine annexation by either Austria or the Kingdom of Serbs, Croats and Slovenes, in the smaller Zone B only if a majority of the people in Zone A would have voted for Yugoslavia. The population of Zone A was predominantly Slovene-speaking: according to the pre-war Austrian census of 1910, people in these municipalities who used Slovene as their primary language represented nearly 70% of the population; while the number of ethnic Slovenes was probably higher. German speakers were concentrated in the town of Völkermarkt and certain smaller localities, especially around Bleiburg () and Ferlach ("Borovlje").