Hungarians mass migrated about a thousand years ago from the Ural Mountains, several thousands of kms from present Hungary. Germans mass migrated to Hungary hundreds of years ago, especially after Mongols and Turks killed most of the population there. Italians lost their appetite to coriander because the mass migration of Germanic people around and after the fall of Rome.
It was more difficult, but it happened many-many times.
If I sort out 20 Spaniards from different provinces and regions, you wouldn't guess if they were Spaniards, French, South Germans, North/South Italians or even Irish.
Yeah, and some also look Moorish, middle eastern, Sephardic, etc. too. Not a big surprise when you learn about the migrations that happened in Spain during the past 2000 years or so. We are a mixed bunch.