Earlier quoted context omitted.
Serbian/Croatian/Bosnian/Kosovar familiarity with German is something that dates from the era of Yugoslavia, it has little to do with corporate sway in the modern EU. Yugoslavia 1) allowed its people to freely work in the West, and many people chose to go to West Germany, and 2) Yugoslavia built up extensive tourist infrastructure in Croatia and Montenegro that drew predominantly German-speaking holidaymakers (and no…
As far as I know the history of my country Croatia familiarity with Germanic nations dates from Habsburg Monarchy[1] meaning 300+ years. [1] https://en.wikipedia.org/wiki/Habsburg_Monarchy
There is quite a body of scholarship on the sociolinguistics of the Austro-Hungarian Empire, if you are curious.