Austria — central_europe borders (3): Hungary, Slovenia, VenetoAustriaVeneto — italy borders (2): Austria, SloveniaVenetoSlovenia — balkans borders (4): Austria, Croatia, Hungary, VenetoSloveniaCroatia — balkans borders (5): Bosnia, Hungary, Montenegro, Serbia, SloveniaCroatiaBosnia — balkans borders (3): Croatia, Montenegro, SerbiaBosniaSerbia — balkans borders (7): Bosnia, Bulgaria, Croatia, Hungary, Macedonia, Montenegro, RomaniaSerbiaMontenegro — balkans borders (4): Albania, Bosnia, Croatia, SerbiaMontenegroAlbania — balkans borders (3): Greece, Macedonia, MontenegroAlbaniaMacedonia — balkans borders (4): Albania, Bulgaria, Greece, SerbiaMacedoniaGreece — balkans borders (4): Albania, Bulgaria, Macedonia, ThraceGreeceHungary — carpathia borders (5): Austria, Croatia, Romania, Serbia, SloveniaHungaryRomania — carpathia borders (3): Bulgaria, Hungary, SerbiaRomaniaBulgaria — carpathia borders (5): Greece, Macedonia, Romania, Serbia, ThraceBulgariaThrace — anatolia borders (2): Bulgaria, GreeceThrace