The Constituent Assembly of India was formed in 1946 to draft the Constitution of India. It took the Assembly almost three years to complete the task, and the Constitution was finally adopted on January 26, 1950. The following are the reasons why the Constituent Assembly took so much time to frame the constitution:

1. Diverse and complex society: India is a diverse and complex society, with a wide range of linguistic, religious, and cultural groups. The Constituent Assembly had to take into account the interests and aspirations of all these groups while drafting the Constitution.

2. Need for consensus: The Constituent Assembly was keen on creating a Constitution that would be widely accepted by all sections of society. This required extensive debates and discussions, with the Assembly members often taking different positions on various issues.

3. Learning from other Constitutions: The Constituent Assembly drew inspiration from a wide range of Constitutions from around the world. This meant that the Assembly had to study and analyze these Constitutions to determine what would be appropriate for India.

4. Detailed deliberations and consultations: The Assembly had a large number of members, and each member had the opportunity to express their views on various issues. This often led to lengthy deliberations and consultations, with the Assembly members taking time to arrive at a consensus.

5. Incorporating amendments: The Constitution went through several rounds of amendments before it was finally adopted. This was because the Assembly members wanted to ensure that the Constitution was comprehensive and addressed all the issues that were important to them.

6. Historical significance: The Constitution of India is a significant document with historical significance. The Constituent Assembly members were aware of the importance of their task and wanted to ensure that they created a Constitution that would stand the test of time.

In conclusion, the Constituent Assembly of India took so much time to frame the Constitution because of the diverse and complex nature of Indian society, the need for consensus, the need to learn from other Constitutions, detailed deliberations and consultations, incorporating amendments, and the historical significance of the task.

The Constituent Assembly took almost three years (two years, eleven months and seventeen days to be precise) to complete its historic task of drafting the Constitution for Independent India. During this period, it held eleven sessions covering a total of 165 days.