B. Samuel Langhorne Clemens
B. Russia backed out of the war.
The Treaty of Brest-Litovsky signified Russia's exit from the War. In November of 1917 Russia was having its own problems. During this time the Russian government was being overthrown and a communist regime being implemented by Lenin.
They were changed from a more conseritive way of thinking to a more liberal way of thinking since they had to account for all the new types of cultures and races that were now part of their empire