Short answers, pulled from the story.
Bhimrao Ramji Ambedkar lived through daily humiliation as a child in the early 1890s while residing in the town of Mhow. He belonged to the Mahar caste which the British Indian Army employed but treated as untouchables within society.
Ambedkar passed his Master of Arts exam majoring in economics by June 1915 after arriving in New York City with a Baroda State Scholarship. He received his Ph.D. degree in economics in May 1927 following the presentation of a thesis on Ancient Indian Commerce.
Ambedkar led thousands of followers to burn copies of the Manusmriti because this ancient Hindu code justified caste discrimination and untouchability through religious doctrine. The event marked a turning point in his campaign against social segregation and became an annual observance known as Manusmriti Dahan Din among Dalit communities.
The agreement between Madan Mohan Malaviya and B. R. Ambedkar allocated 148 reserved seats instead of the 71 seats proposed earlier by Prime Minister Ramsay MacDonald. This compromise unified the electorate in principle but allowed primary elections to let untouchables choose their own candidates.
On the 25th of November 1949, Ambedkar presented the final draft of the Indian Constitution to Rajendra Prasad while serving as chairman of the Drafting Committee. The document guaranteed civil liberties including freedom of religion and abolished untouchability while introducing reservations for scheduled castes and tribes in schools and civil services.
Ambedkar passed away in his sleep at his home in Delhi three days after converting to Buddhism on the 14th of October 1956. In 1990, the Bharat Ratna was posthumously conferred upon him as India's highest civilian award and polls conducted in 2012 named him the Greatest Indian since independence with nearly 20 million votes cast.