Its kind of strange that so much stuff was still in the building. Its as if it were abandoned in a hurry. No time to pack and no time for anyone to loot it.
Musta been Russkies coming.
The Slovaks and Czechs are a recent example, but even most Slavs were undifferentiated as recently as 600 AD - Poles, Czechs, East Slavs, Southern Slavs spoke the same language and were one "ethnicity"
Even Germanics spoke similar languages around the time of Christ
Nebelivka