Which packaging innovation was first developed for military use in the early 1800s before becoming a commercial retail staple by the mid-19th century?

Throughout history, product packaging has evolved dramatically, often reflecting societal changes and technological advancements. In the early 20th century, a particular packaging innovation revolutionized how we preserve and transport food, having profound effects on military logistics, global trade, and everyday consumer habits. This innovation remains influential in modern retail packaging strategies and food preservation techniques. Test your knowledge of this pivotal moment in product packaging history!

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Tin canning (airtight food preservation)
Vacuum-sealed glass jars
Cardboard boxes with paraffin lining
Cellophane wrapping