Which packaging innovation from the 1950s revolutionized retail by allowing products to be pre-packaged, self-served, and individually branded, leading to the modern supermarket model?

Throughout history, product packaging has evolved dramatically, influencing consumer behavior, preservation techniques, and retail strategies. One particular packaging innovation revolutionized the retail industry and fundamentally changed how products were sold, transported, and consumed. This innovation represented a pivotal moment in retail history, transforming not just how goods were presented but reshaping entire supply chains and consumer expectations. Test your knowledge of this significant development in retail packaging history!

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Flexible plastic packaging (polyethylene films)
Vacuum-sealed tin containers
Cardboard boxes with cellophane windows
Waxed paper wrapping systems