Travelling through the heart of Europe, you will notice a lot of similarities in people, their habits, architecture, handicraft, towns and villages.
For centuries this was geographically the territory of the Habsburg monarchy, until it fell apart in 1918 into Poland, Czecho-Slovakia, Hungary, Austria, Romania, Slovenia and Croatia. The people of these countries have always exchanged places, experiences, products, and in some cases even their languages.
And so up till today you will find for example Slovaks living in Hungary, in the Czech Republic, in Serbia or in Romania. You would walk through Vienna and encounter Slovak names on houses and shops.
Ask a Slovak about his ancestors, and you will find out that everyone has at least a Hungarian grandmother, German grandfather, that originally one of their parents came from Czechia or Serbia, or a combination of it all.
This we could call goulash, and goulash is not surprisingly the best-known dish in all the mentioned countries and is prepared with only little variety.