During the late eighteenth and early nineteenth centuries, a revolution—an industrial one was transforming the economic and social structure of Europe, although in a less dramatic and rapid fashion. The period of the Industrial Revolution witnessed a quantum leap in industrial production. New sources of energy and power, especially coal and steam, replaced wind and water to create labor-saving machines that dramatically decreased the use of human and animal labor and, at the same time, increased the level of productivity. In turn, power machinery called for new ways of organizing human labor to maximize the benefits and profits from the new machines; factories replaced shop and home workrooms. Many early factories were dreadful places with difficult working conditions. Reformers, appalled at these conditions, were especially critical of the treatment of married women.