WORLD CIVILIZATION

Detailed explanation-1: -British archaeologist Mortimer Wheeler believed that the Harappan civilisation came to an end due to the invasion of the Aryans, a nomadic, Indo-European tribe. However, this opinion is disputed, as others believe that the civilisation had already been declining by the time the Aryans came.

Detailed explanation-2: -"What seems to be practically unknown is that Chanda, the originator of the idea of Aryan annihilation of Harappans, substantially abandoned his original hypothesis within a few years. By 1929 Chanda did not consider the Aryan immigration as having swept away the chalcolithic civilization of the Indus Valley.

Detailed explanation-3: -Notes: The archaeologist George F. Dales, who excavated at Mohenjo-daro in 1964 proposed ecological degradation was the main cause for the decline of Harappan culture.

Detailed explanation-4: -The Aryan Invasion Theory is a hypothesis developed in the 20th century that states that a group of people called Aryans invaded northern India and destroyed the Indus Valley Civilization.

Detailed explanation-5: -What was the cause of decline of Harappan civilization? Around 1900 BCE, the Indus valley culture began to decline. Climate changes, a decline in commerce with Mesopotamians, river drying up or flooding, and foreign invasions of the Indus civilization may have all contributed to its demise.