She showed that in the period of the Rig Veda , the caste system had n't yet become the complex hierarchy of later periods .
Jaiswal has researched the evolution of the caste system in India , its origins and functions .
Jaiswal showed that in the period of the Rig Veda , the caste system had n't yet become the complex hierarchy of later periods .
Jaiswal has researched the evolution of the caste system in India , its origins and functions .