When did the term 'Black Friday' first become widely used to describe the shopping day after Thanksgiving?

Black Friday has become one of the most significant shopping events in retail history, transforming the holiday shopping season and consumer behavior. But how much do you know about its origins? This trivia question explores the historical roots of what has become a global retail phenomenon that shapes marketing strategies, consumer psychology, and retail promotions worldwide.

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1950s, when Philadelphia police used it to describe the chaos of shoppers and tourists flooding the city before the Army-Navy football game
1939, when President Roosevelt moved Thanksgiving to extend the Christmas shopping season during the Great Depression
1975, when retailers began using the term because it marked when their accounting books went from 'red' (loss) to 'black' (profit)
1984, when major department stores coordinated the first national advertising campaign centered around post-Thanksgiving sales