(Thank you for any help that you can offer, but please; if you ARE NOT COMPLETELY SURE of your answer, refrain from answering. I would hate to have someone stealing the points from someone who might have the correct answer.)

How did the following factors increase American production?
War, communication improvements, transportation improvements, and mass production

Respuesta :

 war: they needed guns and supplies for the soldiers 
communication...: people could ask for a certain product 
transportation...: get supplies easier for making stuff 
mass...: they could make large quantities of stuff faster