I was thinking , is there any fields of history, regions, etc left much inexplored, and this is one of Europe who seems not too used a lot...
What if, during 'dark age' by example, the Magyars never came to Panonia(?) - maybe going south or even *east*, and didn't settle in eastern europe? or early in history, the nation is crushed, and dispersed?
How european history would be changed? The history of the balkans, slavs, ottoman conquests, german lands, etc? what it change?
Would Austria by example appears as an entity? Where would go the slave peoples around, like Czechs and Slovakians? How would turn the Romanians? etc