“Croatia doesn’t invade other countries.” No need. Just be lapdog to a neighboring power and wait for a doggie biscuit. (Roll over, fetch, shake hands, sing “Danke Deutschland”, play “independent”...) —In WW II Hitler gave Bosnia and Herzegovina to “Independent” Croatia. Long ago Hungary gave her Slavonia (not to be confused with Slovenia). Tito gave Croatia Dubrovnik (for centuries an independent city state like San Marino, Lichtenstein), plus Dalmatia and Istria. A recent “Public” TV travelogue shows a jovial guide, fresh from “capitalist” Dubrovnik. The camera follows him up to the beautiful gate of a nigh baronial estate. He sounds the big knocker. From inside comes a cheery feminine voice, calling “who is it?” — in Italian —”chi e’?”/
The gate knocker and the Italian voice were in Istria. After WW II this part of Italy was invaded and annexed by Communist Yugoslavia, headed by Croat/Slovene hybrid Josip Broz (Tito), — the best friend Greater Croatia ever had. — “Croats never invade...”
Dubrovnik was Croatian prior to Tito (see Banovina Hrvatska, for instance).
Dalmatia was the original home of the Croatians in the Balkans...all the royal capitals were in Dalmatia as were all the Croatian kings Dalmatians.
Your history is poor.