I think this would be antibiotics
As the last German Emperor, Kaiser Wilhelm tried to prevent his generals from mobilizing the army. He did not actively seek war as well. However, h<span>is imperialistic and nationalistic agenda in the late 1800s and early 1900s fuelled </span>pre<span>-war diplomatic tensions. </span>
During the enlightenment we began to question many things. The answer for your question is B.
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