New weapons were introduced during World War I such as gas, aircraft, tank, submarine, machine gun, and telephone, was used against the enemies. As a result of using these new inhumane weapons, during World War I many people died than the previous wars.
Answer:
D. New diseases were introduced.
Explanation:
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Definition<span> of </span>nationalism<span>. 1 : loyalty and devotion to a </span>nation; especially : a sense ofnational<span> consciousness (</span>see<span> consciousness 1c) exalting one </span>nation<span> above all others and placing primary emphasis on promotion of its culture and interests as opposed to those of other </span>nations<span> or supranational groups.</span>
