Answer:
D!!
Explanation:
Because artillery and machine guns had made capturing an enemy's position nearly impossible.
Hope this helps!
The Biosphere is the one with plants and animals.
Answer:
belief that God destined the American settlers to expand westward
Explanation:
I would say the answer would be the 2nd one bc his administration cast a “new look” at US national strategy, which resulted in emphasis on nuclear war fighting.
