Which innovative product, first mass-marketed in the early 1900s, transformed American retail by pioneering installment payment plans and creating the modern consumer credit system?

Throughout history, certain product innovations have fundamentally transformed society and consumer behavior. Some products were so revolutionary they altered entire industries and the way people lived their daily lives. This trivia question focuses on a pivotal moment in American consumer history that set the stage for modern consumption patterns. Test your knowledge of how product innovation shaped the course of history!

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Singer Sewing Machine
Ford Model T automobile
Kodak Brownie camera
RCA Radiola radio set