Which packaging innovation, introduced in 1952, revolutionized retail by allowing customers to see products without opening packages, and is credited with enabling the modern self-service supermarket model?

Product packaging has evolved dramatically throughout history, transforming from simple protective coverings to sophisticated marketing tools. The 20th century saw revolutionary innovations that forever changed how products were sold and consumed. Test your knowledge about a pivotal moment in retail packaging history that fundamentally altered consumer behavior and created the self-service shopping experience we know today.

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Blister packaging (clear plastic bubble attached to cardboard backing)
Tetrapak aseptic cartons (shelf-stable packaging for liquids)
Aerosol spray cans (pressurized dispensing system)
Vacuum-sealed tin cans (airtight metal preservation)