In the wake of Habsburg battlefield setbacks some two hundred thousand Orthodox Serbs moved north into Hungary, leaving empty lands filled by new Albanian emigrants, thereby creating the Kosovo issue which has dogged post-Cold War Europe – but these were only two of many confusing shifts, as Romanians headed north into Transylvania and north-west into the Banat; Bulgarians and Albanians moved west and east respectively; and Jews, Vlachs and Gypsies migrated, split and changed
