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The original was posted on /r/todayilearned by /u/PeopleHaterThe12th on 2025-04-04 13:01:58+00:00.

Original Title: TIL about the Smooth-Hawley tariff act of 1930 which increased US tariffs (by an average of 20%) on over 20,000 imported goods, while it seemed succesful at first by 1933 US exports had declined by 61% and its GNP by almost 50%