Why in the nineteenth century, why did workers become a separate and significant force in Western society?

After the victory of the bourgeois revolutions in the Netherlands, England and France, capitalism powerfully took over. “Industrial civilization,” as the capitalists themselves call it, was rapidly spreading throughout the world. The new ruling class of capitalists, having destroyed the power of the noble aristocracy, is greedy. attracted to power and wealth. But as soon as the bourgeoisie became the ruling class, it immediately appeared a powerful adversary. It was a new oppressed exploited class — the working class, or, as it was usually called, the proletariat.
The very nature of capitalist production, when the masses of workers worked together at large enterprises, created the cohesion of a new class.
Accustomed to work together in production, as a whole collective, the workers immediately began to apply various forms of collective mass struggle in their struggle.

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