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Answer:
Explanation:
The rapid development of the factory system of production, characterized by much more rigid, complex, and intricate divisions of labor, both within and between production processes, to which reference has already been made.
I believe the correct answer is C. Hope this helped!
-Twix
Throughout World war 1 airplanes were most often used to Bomb targets on land because this was seen as one of the most effective ways to hurt the enemy.