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1700 BCE
Mohenjo Raro and Harappa
they were along the Indus River, Possibly climate change there was a hypothesis that invasions might have been the reason. There are various serious holes in that theory including the absence of any archaelogical evidence of such destruction. -
1500 BCE
Aryan Invasion
By 1500 BCE the Aryans migrated into the Indian subcontinent. Coming from central Asia, this large group of nomadic cattle herders crossed the Hindu Kush Mountains and came in contact with the Indus Valley Civilization. they use the khyber pass to enter india. they move the seat of the power and influence from from the Indus River to the Ganges river
