The past half-century has witnessed a dramatic change in the way in which people live. Fifty years ago, only a small proportion of the less developed world lived in cities, and world poverty was overwhelmingly rural. In 1950, less than one-fifth of the population of the "third world" was urban;...

Building what we call social tables, this paper quantifies the level and inequality of American incomes from 1774 to 1860. In 1774 the American colonies had average incomes exceeding those of the Mother Country, even when slave households are included in the aggregate. Between 1774 and 1790,...