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In the late modern era, however, equality became an ideal in almost all human societies. It was partly due to the rise of the new ideologies of communism and liberalism. But it was also due to the Industrial Revolution, which made the masses more important than ever before. Industrial economies relied on masses of common workers, while industrial armies relied on masses of common soldiers. Governments in both democracies and dictatorships invested heavily in the health, education and welfare of the masses, because they needed millions of healthy labourers to operate the production lines and millions of loyal soldiers to fight in the trenches.