Explain the role of Ambedkar in uplifting the dalits or the depressed classes

Explain the role of Ambedkar in uplifting the dalits or the depressed classes.

The role of Ambedker in uplifting the dalit was as follows
(i) Dr. BR Ambedkar joined active polities in 1930 and organised the Depressed Classes Association to uplift the dalits.
(ii) He demanded separate electorates for dalits and reservation of seats in educational institutions for them.
(iii) He signed the Poona Pact that gave reserved seats to the depressed classes in provincial and central legislative councils.