"Ephemeral States of the Russian Civil War"

My money would be on the FER, too - under Japanese 'protection'. And then some of the Caucasian republics.

The difficulty with the others is in general that they are either too isolated (and easy pickings for the Reds in time) or sandwiched in between greater powers, like those two Lemko republics (which I had no idea had existed until today!)

Wonderful map by the way. But yes, odd that Ukraine is not on it.
Even today most of the Caucasus republics inside the Russian Federation have local groups rather than Russians constituting a majority of their populations.
 
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