You've probably heard the old saying "the best thing since sliced bread" -- and back in the day, people in the US were genuinely over the moon about presliced bread, thanks to the work of Otto Rohwedder and his automatic bread slicer. Yet during World War II, panic over the country's food supply led to a brief ban on presliced bread... and that's when things got ugly. Tune in to learn more.

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