Culture, and economic power. The north was industrial, and the south was agricultural. As for culture, the north was more British, and the South was more French and Spanish.
The working class is the lowest class "While there is a lower class i am in it". And the fact that he was a devout socialist leads me to believe the working class.
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Individuals mined gold near the surface, then large companies took over
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Russia withdrew from ww1 because of the october revolution. This was the leninist workers union of the time. They forced Russia to back out on the stance of not being able to maintain a civil war and a world war.