Answer:
Airplanes
Explanation:
The first Military Aircraft in U.S history was a Wright Model A on August 2, 1909. This was BEFORE the start of ww1 in 1914. Also, the Italians used Military Aircrafts in the Italo-Turkish war in 1911.
16TH
enslaved 99.9% sure
C. I did this the other day I'm sorry if I'm wrong I don't quite remember it