The Leninist argument is that imperialism, industrialization, and capitalism were intertwined [ianwelsh.net]. It did not make sense to discuss capitalism or industrialization without discussing Empire, and all its crimes. It is also the common argument that land clearances, in which commons rights were taken away from peasants and serfs, often by law and force, were required to create the industrial workforce.
This is because the early industrial workforce was a terrible place to work and live–and the phenomenon is not temporary, by most measures. It was true for between a hundred and a hundred and fifty years. Maybe longer. You worked longer (six and a half days a week, 12 hours a day was common in certain periods), you lived in urban filth, ate less, were sick more, grew to lower height if born into this, and died younger.
So, clearance was bad for the people who were cleared. I trust I don’t have to explain why European Imperialism was bad for most everyone else. Granted, European Imperialism predates the Industrial Revolution (but not the commercial, wind, and water revolutions), but it goes into overdrive during the Industrial period, and the gains of previous periods are definitely used to support the Industrial Revolution.
There are two questions to answer with regards to the clearance issue. First, whether or not clearances were necessary for the agricultural revolution to occur. With no agricultural revolution, there’s not enough food for expanding city populations.
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The second question concerns wages for workers, and is trickier. Allan argues that the Industrial Revolution happened in England for a simple reason: The coal was right there and could easily be shipped to factories. Shipping coal was hellishly expensive, and early steam engines were massively inefficient. Industrialization didn’t start in, say, Paris, because it lacked the resources. In Paris, it was cheaper to use more labor rather than to use coal.
Socio-economic history--a different flavor of geekdom, but variety is the spice of life.