Question

How could anyone know what happened so many years ago

Answer 1

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There are various ways by which the people can know about the past. (i) The remains left by the early man in the form of tools, weapons, pottery, jewellery etc.

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Answer 2

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There are various ways by which the people can know about the past.

(i) The remains left by the early man in the form of tools, weapons, pottery, jewellery etc.

(ii) After man had learnt the art of writing he wrote on Leaves and bark of the trees and even on hard materials .

We have been read script of these people.