Final answer:
The machine gun, poison gas, and armored tanks had the biggest impact on WWI.
Step-by-step explanation:
The technological development that had the biggest impact on WWI was the introduction of machine guns. Machine guns were able to fire a continuous stream of bullets, making it difficult for soldiers to advance or retreat. They were responsible for high casualty rates in trench warfare and changed the dynamics of battlefield tactics.
Another significant technological development was the use of poison gas. Chlorine gas, mustard gas, and phosgene gas were employed by both sides during the war. These gases caused severe respiratory issues, blindness, and even death. The use of gas led to the creation of gas masks and other protective equipment.
Additionally, the development of armored tanks greatly influenced WWI. Tanks were able to navigate through difficult terrains like trenches and provided protection for soldiers. They played a crucial role in breaking the stalemate on the Western Front and revolutionized warfare strategies.
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