Beneath dark clouds unleashing a summer rain, officials in a southwestern Ukrainian border village gathered silently, slowly hanging wreaths on branches to commemorate the destruction of a nation.

The wreaths were not decorated with the yellow and blue of the Ukrainian flag; they were laced, instead, with the red, white and green of Hungary’s. And the nation they honored this month was not their besieged country, but a homeland from their collective history, torn up more than 100 years ago.

Transcarpathia — now a hardscrabble region of Ukraine bordering Hungary — has been home to as many as 150,000 ethnic Hungarians who, through the complex horse-trading, conquests and boundary adjustments of over a century of European geopolitics, ended up within Ukraine’s borders.