Answer:
A ancient shark vertebra should be the answer. Hope this helps
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They applied methods of science. They believed that the use of reason could lead to reforms of government, law, and society.
Answer;
D. The mobilization of entire populations for war efforts
Explanation;
A defining characteristic of total war during both world wars was that the mobilization of entire populations for war efforts.
A total war is a war in which the entire nation is involved in. However, there are many ways in which an entire nation can be involved in a war. The following social, economical, military and political characteristics of a society/conflict signify a total war/society that wages a total war.