https://historyjustgotinteresting.com/4-main-causes-of-ww1/nationalism-in-ww1
Seen as a more peaceful alternative to the concept of pan-Slavism, the policy of Austro-Slavism proposed a federation of eight national regions, with a degree of self-rule. Austro-Slavism gained support from Slovaks, Slovenes, Croats and Poles, but was ultimately dismissed following the formation of Austria-Hungary, in 1867, which honoured ...