tuhy
The Trench Mortars effected the World War 1 (WW1) by giving an advantage to the users by being able to keep cover and still be able to shoot over and hit or at least hit the ground near the enemy's trenches to force then to move.
yes it did
Mortars, artillery shells especially shrapnell, hand grenades and rifle grenades.
Because they fought in the war
it didnt
none
It didn't.
Machine guns, trucks, planes, mortars, and telegrams. These are the first five that come to mind.
divided and weak Germany
1 million
Zepplins