Answer: C. Interchangeable Parts.
Explanation: This was the correct answer on the test I took.
Eli Whitney popularize interchangeable parts that was essential to the industrialization of the North.
Industrialization is the period of social and economic change that transforms a human group from an agrarian society into an industrial society. This involves an extensive re-organisation of an economy and it's main purpose was manufacturing in the industrial units. New machines, new power sources, and new ways of organizing work made existing industries more productive and efficient.
Therefore, (C) option is the correct answer.
To learn more about Industrialization,refer here :
https://brainly.com/question/15397975
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