Great map of the Ephemeral States of the Russian Civil War:
The state collapse of the old order temporarily brought all sorts of strange new political formations into existence, as is the universal pattern (“the empire long united must divide”).
The Idel Ural Republic. The Republic of North Ingria. Even a “Green Ukraine” in the Far East.
All fleeting entities which nobody except specialists and history buffs know about now, because the USSR declined to sponsor them.