Airplanes first proved to be of practical value in military operations.
In what area did airplanes first prove to be of practical value?
(1 point)
Ostunt shows
O mail delivery
the tourism industry
military operations
1 answer
(1 point)
Ostunt shows
O mail delivery
the tourism industry
military operations
1 answer
Airplanes first proved to be of practical value in military operations.