Answer:
They were killed off by diseases the Europeans brought
Disease devastated the population.
A series of wars forced people to leave the area.
Massive flooding disrupted farming.
Explanation:
- The Indus Valley civilization is one of the oldest civilizations, in addition to Sumerian and ancient Egypt. It originated about 5,000 years ago in the Indus Valley on the border between modern India and Pakistan, reaching its peak between 2200 BC and 1900 BC.After 1900 BC.
- its power began to decline, and after a few centuries it would completely disappear.
- The cities in the Indus Valley were deserted and their tribes moved to the villages at the foot of the Himalayas.
- Many historians and archaeologists have linked the disappearance of civilization to the climate change in the region, which has become colder as the monsoon weakens.
- The cause may be some invasion or change in the flow of the Indus River.
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I think you should go with C or either with D
Here's the definition, it might help: a state in which the supreme power rests in the body of citizens entitled to vote and is exercised by representatives chosen directly or indirectly by them.
