Answer:
It's A :))
Explanation:
c. factory workers.
b. homemakers.
d. professionals.
c. a nation attacking another nation.
b. a nation in war.
d. any nation in the treaty for any reason.
B. to spread christianity
C. for defensive purposes
D. to trade with native americans
B.
Weapons such as poison gas were developed as a reaction to the stalemate that occurred throughout most of the war