| Summary: | "Is inequality largely the result of the Industrial Revolution? Or, were pre-industrial incomes and life expectancies as unequal as they are today? For want of sufficient data, these questions have not yet been answered. This paper infers inequality for 14 ancient, pre-industrial societies using what are known as social tables, stretching from the Roman Empire 14 AD, to Byzantium in 1000, to England in 1688, to Nueva Espa' a around 1790, to China in 1880 and to British India in 1947. It applies two new concepts in making those assessments -- what we call the inequality possibility frontier and the inequality extraction ratio. Rather than simply offering measures of actual inequality, we compare the latter with the maximum feasible inequality (or surplus) that could have been extracted by the elite. The results, especially when compared with modern poor countries, give new insights in to the connection between inequality and economic development in the very long run"--National Bureau of Economic Research web site
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