Question

then why is the caste system is still there ​

Answer 1

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yes it exists in India because for educational and jobs reservation in India.

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Answer 2

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The caste system consists of two different concepts, varna and jati, which may be regarded as different levels of analysis of this system. The caste system as it exists today is thought to be the result of developments during the collapse of the Mughal era and the rise of the British colonial regime in India.