What was the original meaning of 'Black Friday' before it became associated with post-Thanksgiving shopping sales?

Black Friday is now synonymous with post-Thanksgiving shopping and massive sales, but its origins are more complex than many realize. This retail phenomenon has transformed from a local Philadelphia term to a global shopping event that shapes retail strategies worldwide. Test your knowledge about how this shopping festival began and how it earned its now-famous name!

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A 1929 stock market crash that occurred on a Friday, leading to the Great Depression
A term used by Philadelphia police to describe the chaotic traffic and crowds when shoppers and football fans flooded the city after Thanksgiving
The day retailers traditionally went from operating at a loss ('in the red') to making a profit ('in the black') for the year
A marketing campaign created by Macy's in 1975 to boost holiday shopping after Thanksgiving