Which 19th century product innovation is credited with launching the concept of interchangeable parts in manufacturing and is often called the first American consumer product with global brand recognition?

Throughout history, certain product innovations have fundamentally altered human civilization and daily life. These breakthrough products often came from unlikely places, faced significant resistance, or were initially developed for entirely different purposes than what made them famous. This trivia question tests your knowledge about a revolutionary product innovation from history that transformed an entire industry and set the stage for modern manufacturing.

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Samuel Colt's revolver
Singer's sewing machine
McCormick's mechanical reaper
Edison's phonograph