Which American retail giant was referred to as the 'Arsenal of Democracy' during WWII for converting its automobile assembly lines to produce military equipment?

During World War II, American manufacturing underwent a dramatic transformation to support the war effort. One company in particular became known as the cornerstone of the 'Arsenal of Democracy' by applying their retail and production expertise to military manufacturing. Test your knowledge about this famous corporate pivot that helped win the war through mass production techniques.

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Ford Motor Company
General Motors
Chrysler Corporation
Montgomery Ward