Which new developments in the factory system of the 1920s businesses produce more items at lower costs? select three options.
assembly line
division of labor
interchangeable parts
increased consumerism
growth of the middle class

john f. kennedy purpose was to make his argument a strong appeal to emotion in order to make an impact and connection to american citizens. he want to achieve peace by telling the citizens they shouldn't be afraid of other nations.

explanation:

either d or b, i'm not to sure. but my gut tells me it's prob going to be b

so the soldiers could have water when needed for wounds or drinking, and it will also be easy to set up camp if it does not flood.