Eurasian Divide

The Eurasian Divide was an event inbetween 1745 to 1911 in which the Russian Empire spontaneously split into twenty three states, two of which currently remains today. The exact cause is unknown, but it definitely was politically related and came sometime after the First European War.

States that formed (west-to-east)
For easier understanding: Karelia and Caspia take Murmansk-Arkangelsk and Caucasia-Krasnodar respectively. Murmansk-Arkangelsk annexes some land, Caucasia-Krasnodar takes full control of the Caucasus. Russia takes over Komi, Tomsk, Yamalia-Krasnoyarsk and Yakutia, Tajikistan occupies Buryatia, and Khabarovsk and the Green Ukraine are taken over by West Manchuria. Most of the divided Russia is taken over by most of the countries mentioned.
 * Karelian Republics (today Karelia)
 * Republic of Caspia (today Caspia)
 * Federal Republic of Pskov (joined remaining Russian forces)
 * Smolensk-Bryansk (annexed by Pskov)
 * Kursk (annexed during the three-way-war with Belgorod and Caucasia-Krasnodar)
 * Belgorod Republic (annexed by Caucasia-Krasnodar)
 * Rostov Federation (annexed by Kursk)
 * Caucasia-Krasnodar (annexed by Caspia)
 * Mordovia Federation (annexed by Murmansk-Arkangelsk)
 * Murmansk-Arkangelsk (annexed by Karelia: since owned by Nord-Norge, Arkangelsk returned to Russia in 1856)
 * Komi Federal Republic (annexed by remaining Russian forces)
 * Kirov (annexed by Komi)
 * Perm (annexed by Komi)
 * Omsk United Republic (annexed by Tomsk)
 * Tomsk (joined Russia)
 * Yamalia-Krasnoyarsk Democratic Republic (joined Russia)
 * Irkutsk (annexed by Yamalia-Krasnoyarsk)
 * Buryatia Empire (collapsed; occupied by Tajikistan)
 * Khabarovsk Eastern Federation (today occupied by West Manchuria)
 * Green Ukraine (occupied by West Manchuria)
 * Yakutia United State (joined Russia)
 * Magadan-Kamchatka (annexed by Yakutia)
 * Chukotka (annexed by Yakutia)