Which packaging innovation from the 1880s fundamentally changed retail by allowing products to maintain consistent quality while being transported across long distances?

Before modern packaging methods, products were often sold loose or in simple containers. The evolution of product packaging has dramatically changed retail history and consumer behavior. This trivia question explores a pivotal innovation in packaging history that revolutionized how products were sold and consumed, setting the stage for modern retail practices we take for granted today.

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The corrugated cardboard box, patented by Robert Gair in 1879 after a fortunate manufacturing accident
The Mason jar with screw-on lid, which revolutionized food preservation but wasn't widely used for retail until the 1900s
The tin can with pull tab, which wasn't actually invented until 1956 by Ermal Fraze
Cellophane wrap, which wasn't invented until 1908 by Swiss chemist Jacques Brandenberger