Answer :
Final answer:
Machine guns, poison gas, and tanks were the new technologies used in WWI resulting in high death tolls.
Explanation:
The new technology that was used in WWI and resulted in extremely high death tolls were machine guns, poison gas, and tanks.
Machine guns, such as the Maxim Gun, were capable of firing hundreds of rounds per minute, causing significant casualties.
Poison gas, such as mustard gas, was used to cripple and kill soldiers by causing severe respiratory damage.
Tanks were introduced in WWI and revolutionized warfare by providing armored protection and the ability to advance across difficult terrain, but they also caused many casualties.
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