Burring this time they had a revolution going on they no longer wanted to be controlled by their Leander, so they revolted and this is when Bolshevik came in and tolled them they could have a new kind of government which we call Communism.
There were many reasons. The country was in extreme poverty, there was starvation everywhere and people were dying in misery. They wanted to change the imperialistic rule and impose their own bolshevik rule. People also wanted to end their participation in the war which is one of the first things that happened after the revolution. The communists left the war before the war ended.
I dont know what your referring to but in the times before the Soviet Union Carl Marx had written many books on communism and socialism that were put from just theory to reality
