Answer: The sentence "New circumstances are constantly begetting new needs for our safety." suggests that the US government would gain more power to prepare for war. I hope my answer has come to your help. God bless and have a nice day ahead!
Im guessing, but i think propaganda
One example that comes to my mind is physics. By Curie's principle, the symmetry of causes leads to a symmetry in the effects.
There are many other possible answers though (art for instance).
A. People are tired of getting only 20 miles per gallon
