Nearly 95% were Slovenes and 5% Germans, while 99% of the population belonged to the Roman Catholic Church.
According to nationality, 71.54% were Germans, and 28.39% Slovenes, mostly settled in the districts adjoining the Slovene province of Carniola.
But its place was taken more and more by Yugoslavia, which, it should be remarked, was then still used to denote all the territories inhabited by any southern Slav tribe, and so to include the Bulgars no less than the Serbo-Croats and Slovenes.
Among the Slovenes of Istria and Carniola there were also numerous arrests, and the Matica Slovenska, the chief Slovene literary society, was dissolved and its funds confiscated.
The jealously guarded secret was discovered by Mr. Supilo in Petrograd within a few days of the signature of the treaty, and the main facts becoming known in Austria-Hungary, were skilfully exploited by her to rally the Croats and Slovenes in defence of their national territory.