there are 195 countries in the world
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The populations become completely separated from one another</span>
It's being estimated that dinosaurs lived on Earth from about 237 million years ago to about 66 million years ago. So answers B and D are definately too "old", while answer A is too "young". I'd pick answer C as it's most probable.
Answer: You could use old documents to help you make new medicine.
Explanation:
