Which historical product development innovation, first implemented in the early 1900s, revolutionized manufacturing by introducing standardized parts and assembly line production?

Before mass production transformed the world economy, product development was largely an artisanal process. The Industrial Revolution marked a pivotal shift in how products were conceived, designed, and manufactured. This trivia question explores a key innovation in product development methodology that forever changed manufacturing history and set the foundation for modern product development practices we still use today.

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Fordism - Henry Ford's Model T assembly line system that standardized production and dramatically reduced manufacturing time
Taylorism - Frederick Taylor's scientific management approach that focused on labor efficiency but didn't standardize parts
The Whitney System - Eli Whitney's interchangeable parts concept for muskets, which preceded true assembly lines by nearly a century
The Lowell System - Francis Cabot Lowell's textile manufacturing approach that centralized production but maintained traditional craftsmanship