Father of Indian Constitution:
The father of the Indian Constitution is Dr. B.R. Ambedkar. He was a prominent Indian jurist, economist, politician, and social reformer who played a pivotal role in the drafting of the Indian Constitution.

Contribution to the Constitution:
- Dr. B.R. Ambedkar was appointed as the Chairman of the Drafting Committee of the Indian Constitution in 1947.
- He played a crucial role in shaping the Constitution by incorporating principles of equality, liberty, and justice.
- His vision for a progressive and inclusive society is reflected in the fundamental rights and directive principles of state policy enshrined in the Constitution.

Key Principles:
- Dr. Ambedkar advocated for the abolition of untouchability and discrimination based on caste, gender, and religion.
- He emphasized the importance of social justice, equality, and the rights of marginalized communities.
- His efforts led to the inclusion of provisions for reservations for Scheduled Castes, Scheduled Tribes, and Other Backward Classes in education and employment.

Legacy:
- Dr. B.R. Ambedkar's legacy as the father of the Indian Constitution is profound and enduring.
- His commitment to social reform, equality, and justice continues to inspire generations of Indians.
- His contributions to the Constitution have shaped the democratic and secular fabric of India.
In conclusion, Dr. B.R. Ambedkar's role as the father of the Indian Constitution is significant and his principles and ideals are foundational to the democratic values of India.

Dr. Bhim Rao Ambedkar