Answer:
the use of poison gas and machine guns
Explanation:
Aerial attacks weren't really a thing, unrestricted submarine warfare was a reason why the US joined the war but not a factor in high casualty rates, and blimps using direct artillery fire isnt as practical as machine guns and poison gas
There is no photo, therefore I can not answer your question.
Answer: It gave aid to France ,Britain, Russia, and China
Explanation: We gave Shermans, M3a3 Lees, M3/M-5 Stuarts, and other tanks to them. Also planes and other need items. We also sent a squadron, the Flying Tigers to China to aid against japan.
