Kill people
Used extensively.
Yes. There were machine guns in WW1. There were Gatlin Guns, a type of machine gun, in the Civil War.Yes
rifles and machine guns
All of the major players possessed machine guns by the outbreak of the war.
unknown
They were not yet invented- did not exist.
it affected it by gas.
machine guns, submarines and poisen gas
machine guns, mustard gas, tanks
machine guns, mustard gas, tanks
All of them. Very popular weapon.
Poison GasAirplanes Submarines Tanks Automatic machine guns