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There were many technological advancement during world war 1. One of them was the tank. However one of the most dangerous inventions was poison gas.
world war one had less dangerous weapons than world war two
me me
Germany
The 3 key technology the Axis used during World War 2 are:TanksGunsBombs
Technology changed war as it improved their defenses and weapons. The British created tanks and the Germans created gas. Both were unsuccessful.
Airplane's
The tank.
tank
the soviet union (Russia)
The machine gun changed warfare
Americans have changed Japan by not giving japan the proper exports during World War II.