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

Step back in time to explore the fascinating evolution of retail in history. Long before e-commerce and digital payments, innovative merchants were revolutionizing how people shopped. This poll examines a pivotal moment in retail history that forever changed consumer behavior and set the foundation for today's shopping experiences. Test your knowledge of retail's historical transformation!

This is a live public trivia poll on AIPolls.Net. Vote and see real-time results.

The self-service grocery store, pioneered by Piggly Wiggly founder Clarence Saunders
The department store credit card, introduced by Sears & Roebuck
The mail-order catalog with money-back guarantee, created by Montgomery Ward
The retail loyalty program, first implemented by Woolworth's five-and-dime stores