Which innovative packaging approach, introduced in the 1880s, is credited with revolutionizing retail by allowing products to be pre-measured, branded, and sold without merchant intervention?

In the annals of retail history, product packaging has evolved from simple protective coverings to sophisticated marketing tools. Before modern packaging innovations, products were typically sold in bulk from barrels or unmarked containers. This poll explores a pivotal innovation that revolutionized how products were presented to consumers, fundamentally changing retail strategy and consumer behavior in the late 19th century.

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The Kellogg's wax paper cereal box, allowing breakfast cereals to be sold in standardized quantities
The National Biscuit Company's (Nabisco) moisture-proof cardboard carton with inner wax lining for crackers
Coca-Cola's standardized glass bottle design, enabling consistent brand recognition across markets
Campbell's sealed tin cans for soup, extending shelf life and enabling nationwide distribution