The answer to the first question is the first choice.
The answer to the second question is the third choice.
Answer:
Some scholars defend the theory that climate change led to the decline of the Indus Valley civilization around 1800 BCE. The drying of the Saraswati River was the main cause of climate change in the area; others believe that a great flood impacted it.
However, this is not the only explanation possible. Another theory that the demise of the Indus Valley civilization was caused by the invasion of the Indo-European, nomadic people of the Aryans, who conquered the region.
Explanation:
Answer:
The correct answer is The period was marked by the invention of agriculture and the rise of civilization as we know it today.
Most of cultural practices today starting with the most basic one, democracy, originated in the Hellenistic period. This is also the part of history where Europeans learned how to be efficient in agriculture and build societies and cities and states.
Explanation:
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