Answer :
The working classes were the groups that controls the dictatorship government of the proletariat.
What is the dictatorship of the proletariat?
This falls between the capitalist economy and a communist economy where the post-revolutionary state seizes the means of production and forced implementation of direct elections.
During the period, the working classes were the groups that controls the dictatorship government of the proletariat.
Therefore, the Option D is correct.
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