1900 was part of the Edwardian and Victorian era with an emphasis on Victorian, all of europe was involved in that fashion. While there may be folk costumes associated with Hungary, people wouldn't travel across the ocean wearing those costumes. Those outfits were saved for special holidays and rituals.
Do an easire search, Hungary 1900. When you see the images, you'll notice they are wearing normal suits, just like anyone else. They'd have more elaborate coats, hats, accessories, etc...but, still, suits.
Should be easire for you, this way.
How can we sleep while our beds are burning???