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The U.S. is the country that invented progressive taxation of income and of inherited wealth in the 1910s and 20s.

"Economist says U.S. inequality reaching "spectacular" heights". Interview with Alain Sherter, www.cbsnews.com. June 5, 2014.
The U.S. is the country that invented progressive taxation of income and of inherited wealth in the 1910s and 20s.