Which packaging innovation, first commercially successful in the 1960s, revolutionized beverage retail by dramatically extending product shelf life while reducing costs and enabling nationwide distribution?

In the history of consumer products, certain packaging innovations completely transformed how goods were sold, preserved, and consumed. These breakthroughs not only revolutionized specific industries but also changed consumer behavior and retail strategies forever. This trivia question explores one of the most significant packaging innovations of the 20th century that fundamentally altered the relationship between products, retailers, and consumers.

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The aluminum pull-tab can (invented by Ermal Fraze in 1959, first used by Pittsburgh Brewing Company)
The plastic two-liter PET bottle (developed by Nathaniel Wyeth for Pepsi in 1970)
The Tetra Pak aseptic carton (created by Ruben Rausing, allowing room-temperature storage of liquids)
The ring-pull steel can (developed by Crown Cork & Seal in 1965 for beer companies)