ambedkar's contribution to indian constitution

Bhimrao Ramji Ambedkar born on 14 April 1891 and popularly known as Babasaheb was an Indian jurist, politician, philosopher, anthropologist, historian and economist. Born into a poor Mahar family, Ambedkar campaigned against social discrimination, the Indian caste system. He converted to Buddhism. Ambedkar was posthumously awarded the Bharat Ratna, India's highest civilian award, in 1990. Ambedkar contributed a lot to our Indian constitution.Upon India's Transfer of Power by British Government to leaders of High Cast on 15 August 1947, the new Congress-led government invited Ambedkar to serve as the nation's first Law Minister, which he accepted. On 29 August, he was appointed Chairman of the Constitution Drafting Committee, charged by the Assembly to write India's new Constitution.[33]Granville Austin has described the Indian Constitution drafted by Ambedkar as 'first and foremost a social document'. ... 'The majority of India's constitutional provisions are either directly arrived at furthering the aim of social revolution or attempt to foster this revolution by establishing conditions necessary for its achievement.'The text prepared by Ambedkar provided constitutional guarantees and protections for a wide range of civil liberties for individual citizens, including freedom of religion, the abolition of untouchability and the outlawing of all forms of discrimination. Ambedkar argued for extensive economic and social rights for women, and also won the Assembly's support for introducing a system of reservations of jobs in the civil services, schools and colleges for members of scheduled castes and scheduled tribes and Other Backward Class, a system akin to affirmative action. India's lawmakers hoped to eradicate the socio-economic inequalities and lack of opportunities for India's depressed classes through these measures. The Constitution was adopted on 26 November 1949 by the Constituent Assembly. It was enforced on 26 January 1950.

B. R Ambedkar's role and contribution to the making of the Indian Consitution is certainly of the most significant level-- on 15th August 1947, when India achieved its independence, Nehruji made Ambedkar as his first Law Minister, in recognition of his legal prowess; and also, in fact, made him the Chairman of the Indian Constitution Drafting Committee: a singular honour, and of course, his first/primary important 'contribution' to this document i.e. its actual writing/drafting and structuring, which is no small thing, as it is Ambedkar ji's words that roll off so decorously when we read the document.
As writer/drafter/framer and 'prime mover' of the new Indian Constitution, Ambedkar also had a central role in guiding his committee towards the sort of socialistic, idealistic vision that he had, and that to some extent he also shared with Nehru ji. According to Granville Austin, this document thus was first and foremost, a 'social document' i.e. one which identified many of the basic problems besetting and needing to be addressed, for the amelioration of the masses-- and in this regard it is worthwhile noting down pointwise some of Ambedkar's main, personal contributions, depending upon his own expertise and interests/concerns:
1. Guarantees of basic civil liberties to Indian citizens
2. Abolition of all forms of discrimination of caste and creed, freedom of religion and abolition of 'untouchability' in principle at least-- something very peronal for him, coming as he did from untouchable origins.
3. Equal rights under law to Indian women, and full social and economic freedom/s to them, too.
4. Various job quotas guarantees for scheduled castes and tribes and minorities in India, to ensure fairplay and some modicum of 'removal' of social inequalities for remote and underpriviliged communities.
These were no small achievements personally, and along with their adoption, the whole of the Indian Constitution was thereafter formally passed by Parliament (Constituent Assembly) on 26th November 1949.