How did the following factors increase American production? *I also don't understand what the question is asking...*

War, communication improvements, transportation improvements, and mass production

Gunsmiths made it easier for soldiers to get the needed guns and supplies for the soldiers to fight with. Communication improvements: The telephone made it so people could ask for a certain person and talk to them almost instantly. Transportation improvements: Cars and boats made it so people could get supplies faster for making things. Mass production: Factories made it so they could make large quantities of things faster.

Explanation: