How did Harrappan culture come to …

There are many reasons that are being put forward by scholars regarding the decline of the Harappan civilization,

1. climatic change, deforestation, excessive floods, the shifting and/or drying up of rivers, to overuse of the landscape. Although some of these “causes” may hold for certain settlements, but they do not explain the collapse of the entire civilisation.

2. Invasion of Aryans- It is believed by some scholars that invasion of aryan lead to the decline of Harappan civilization however this hypothesis has been refuted.

3. End of an unifying element- It is believed that a strong unifying element perhaps came to an end because we see disappearance of seals, scripts, weight etc.

Regular floods destroyed the area. Aryan invaders killed people and destroyed the Indus Valley Civilization. ... Thus it took hundred of years again for India to have beautiful cities like Mohen-jo-daro and Harappa. The end was partly caused by changing river patterns. The Indus Valley civilization began to decline between 1900 and 1800 BCE. Most of the cities disappeared or were abandoned. Archaeologists do not know why this happened.