Which retail innovation, introduced in the early 20th century, revolutionized shopping by allowing customers to select their own merchandise without clerk assistance for the first time?

The history of retail is filled with innovative strategies and transformative practices that shaped how we shop today. This poll tests your knowledge about a pivotal moment in retail history that fundamentally changed how products were sold to consumers. Understanding these historical retail innovations provides valuable insights into modern product strategies and consumer behavior patterns.

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Self-service grocery stores (Piggly Wiggly, founded 1916)
Department stores (Macy's expansion in the 1920s)
Mail-order catalogs (Montgomery Ward's catalog of 1909)
Discount chain stores (Woolworth's five-and-dime model of 1919)