the US had the highest standard of living in the world since the post-civil war years.
False. The United Kingdom had by far the highest standard of living in the world until World War 2.
Here is some data on per capita GDP in 1990 Geary-Khamis dollars (for the uninitiated: values in monetary units of each country converted into dollars at the purchasing-power-parity or PPP exchange rates estimated by Geary and Khamis, expressed in 1990 US dollars): Country 1913 1930 US 5307 6220 UK 5032 5195 Source: Angus Maddison, Monitoring the World Economy 1820-1992, OECD, Paris, 1995,pp.193 ff.
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