The drafting of the Constitution was completed on 26th November, 1949.

Background:
The process of drafting the Constitution of India began in December 1946, when the Constituent Assembly was established. The Constituent Assembly was tasked with the responsibility of drafting and adopting a new constitution for independent India.

The Constituent Assembly:
The Constituent Assembly was composed of elected representatives from across the country. It included leaders from various political parties, religious and social groups, and was headed by Dr. Rajendra Prasad, who later became the first President of India. The Assembly held its first meeting on December 9, 1946.

The Drafting Committee:
To draft the Constitution, a Drafting Committee was formed within the Constituent Assembly. The committee was chaired by Dr. B.R. Ambedkar, who is often referred to as the "Architect of the Indian Constitution." The other members of the Drafting Committee included N. Gopalaswami Ayyangar, Alladi Krishnaswamy Ayyar, K.M. Munshi, and T.T. Krishnamachari.

The Process:
The drafting of the Constitution was an extensive and meticulous process. The Committee held several meetings and discussions to deliberate on various aspects of the Constitution, including fundamental rights, directive principles of state policy, the structure of the government, and the distribution of powers between the center and the states.

The Drafting Committee took into account inputs and suggestions from various members of the Constituent Assembly before finalizing the draft. The draft was presented to the Assembly on November 4, 1948, and extensive debates and discussions took place on its provisions.

Completion of the Draft:
After almost a year of discussions and deliberations, the drafting of the Constitution was finally completed on November 26, 1949. On this day, the Constituent Assembly formally adopted the Constitution of India, and it was signed by the members present.

Enforcement of the Constitution:
Although the drafting of the Constitution was completed on November 26, 1949, it did not come into effect immediately. The Constitution was enforced on January 26, 1950, which is celebrated as Republic Day in India. On this day, India officially became a sovereign democratic republic.

Conclusion:
The drafting of the Constitution was a significant milestone in India's journey towards independence and self-governance. It was a result of the tireless efforts of the members of the Constituent Assembly, particularly the Drafting Committee. The completion of the draft on November 26, 1949, marked a crucial step towards the realization of a democratic and inclusive India.