In 1872, which retail innovation did Aaron Montgomery Ward introduce that revolutionized product distribution and is often considered a precursor to modern e-commerce?

Before Amazon and even before Walmart, American retail underwent a dramatic transformation that changed how people shopped forever. The late 19th century saw innovations in retail that would lay the groundwork for modern e-commerce. Test your knowledge of retail history with this challenge about one of America's most influential early retail pioneers and their revolutionary business model.

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The mail-order catalog with a 'satisfaction guaranteed or your money back' policy
The first department store with fixed pricing instead of haggling
The inventory tracking system using punch cards
The first subscription-based product delivery service