How is it known that Indo-Aryans were dependent on milk from cattle then later turned to agriculture?

Question

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1 point
There is evidence in tools used that have changed.
Vedas have records of how Indo-Aryans lived.
DNA matches of people today show a change in diet.
Bhagavad-Gita shows ancient people’s lifestyles.

Answer 1

Archaeological evidence of tools used for agriculture.