India never had Caste system, it was varna system classifying person based on profession and person can choose their profession accordingly. It was Mugals and Britishers which converted varna system in to caste system.
Many absurd things like 'Parda' in north indian hindu culture comes due to muslim invader who use to pick and rape women in their area. It can be connected to Burka in original culture. Otherwise culture where Kamasutra and Khajuraho was established thousands of years back, it cannot be such lame one to promote parda.
I can quote many example along insights to connect them.