A few questions about varna and caste systems.

by Questions4historians

I have heard it claimed that varna and caste system are different, and that caste system was the invention of the British, specifically one Sir Herbert Hope Risley. Is this true?

I have also heard it claimed that varna system was highly fluid and allowed a great degree of mobility. Was this carried out in practise?

Was there varna based discrimination before the supposed invention of caste? What did that look like?

MaharajadhirajaSawai