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In page Trotskyism:

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Trotsky argues that countries like Russia had no "enlightened, active" revolutionary bourgeoisie which could play the same role, and the working class constituted a tiny minority. By the time of the European revolutions of 1848, "the bourgeoisie was already unable to play a comparable role. It did not want and was not able to undertake the revolutionary liquidation of the social system that stood in its path to power."[citation needed]