What led to the decline of the Harappan Civilization?

       Like any civilizations in the world, the Harappan Civilization too had to face decline. Its glory finally diminished between 2000 and 1800 BC. We cannot really pinpoint one single reason.

       Climate changes may have played a role, since the Earth was becoming warmer during this time. The land became drier, and water for the cities ran short. It is also thought that earthquakes or fires may have destroyed many cities. The city of Mohenjo-Daro shows evidence of having been destroyed by fire. Other scholars feel that the population was wiped out by an epidemic or disease.

       It is also likely that the area became too large to be effectively controlled, encouraging attacks by outsiders. In any case, the nomadic Aryans invaded India around 1500 BC, destroying the Indus Valley Civilization, bringing to an end the most brilliant civilization of the ancient world.

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