A lot. The most obvious is the tank, which as well as attacking enemies, shielded foot soldiers from machine gun fire which was killing a lot of Allied soldiers.
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Britain has had nukes for a long time. After World War 2 the US shared its nuclear technology with Great Britain and Canada, and Britain developed into a nuclear armed nation.
it helps more people die
theres no technology in world war 1 lol :)
How? Beacause it was telling the soldiers where the piolits were
they help britain and France