Which retail sales innovation, introduced in 1916, fundamentally changed shopping habits by allowing customers to select their own merchandise without clerk assistance?

Throughout history, retail sales strategies have evolved dramatically, shaping consumer culture and business practices. From ancient marketplaces to modern e-commerce platforms, the way products have been marketed and sold tells us much about society's values and technological capabilities. This poll tests your knowledge of a pivotal moment in retail history that changed how products reached consumers and transformed shopping habits forever.

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Piggly Wiggly's self-service grocery store model
Marshall Field's department store browsing concept
Sears Roebuck's mail-order catalog system
A&P's chain store standardization approach