Question

the earlier practice of untouchability is now banned by ___________​

Answer 1

Answer:

The 1950 national constitution of India legally abolished the practice of untouchability and provided measures for positive discrimination in both educational institutions and public services for Dalits and other social groups who lie within the caste system.

So there was no such single person behing abolishing the practice of untouchability.

Answer 2

Answer:

The earlier practice of untouchability is now banned by Mahatma Gandhi