Answer:
A. Neanderthals.
Explanation:
The first fosils of this species were found in the Neander Valley in Germany, it´s where the name comes from. They appeared on Earth at least 200,000 years ago, during the Pleistocene period. The Neanderthals inhabited in Eurasia, from the Atlantic shores of Europe to Central Asia. They are the closest species to homo sapiens who ever lived .
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It caused the civil war. The industrial revolution in the North, during the first few decades of the 19th century, brought about a machine age economy that relied on wage laborers, not slaves.
A peninsula is a land in which three sides of it is surrounded by water!
In this case, Europe in a peninsula because it is surrounded by three bodies of water. I would suggest you look at a map to get a deeper understanding.