By 1870, Britain’s steam engines generated 4 million horsepower, equivalent to the work of 40 million men, who—if industry had still depended on muscles—would have eaten more than three times Britain’s entire wheat output.

By 1870, Britain’s steam engines generated 4 million horsepower, equivalent to the work of 40 million men, who—if industry had still depended on muscles—would have eaten more than three times Britain’s entire wheat output.

– Ian Morris –

Why the West Rules—for Now: The Patterns of History

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