The Nile River
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Answer:
A.
Explanation:
Option A i.e Hunter-Gatherer Societies is the correct answer. Hunting gathering was the first mode of subsistence in human history. In this mode of subsistence the man used to collect the wild plants or fruits and hunt the animals. Hope this helps!
Answer:
United States.
Explanation:
In the early twentieth century, the country that produced the most industrial goods was the United States! This period of time is known as the Second Industrial Revolution.