Introduction:
The Planning Commission of India was a key institution established to promote and guide the process of economic development and planning in the country. It played a vital role in formulating and implementing five-year plans, allocating resources, and monitoring progress towards developmental goals.

Establishment:
The Planning Commission was set up on 15th March 1950 through a resolution of the Government of India. It functioned as an extra-constitutional and non-statutory body until its dissolution in 2014. The commission was established under the chairmanship of the Prime Minister, with a Deputy Chairman and other members appointed by the government.

Composition:
The Planning Commission consisted of a Chairman, Deputy Chairman, full-time members, and part-time members. The Chairman of the Planning Commission was the Prime Minister of India, while the Deputy Chairman held the rank of Cabinet Minister. The full-time members and part-time members were appointed by the government based on their expertise and experience in various fields.

Scope of Work:
The Planning Commission had a broad scope of work that encompassed various aspects of economic planning and development. Some of the key responsibilities and functions of the commission included:

1. Formulation of Five-Year Plans: The Planning Commission played a crucial role in formulating five-year plans, which outlined the developmental goals, strategies, and policies for the country. These plans aimed to achieve balanced regional development, reduce poverty, and promote economic growth.

2. Allocation of Resources: The commission was responsible for allocating financial and other resources to different sectors and states based on their developmental needs. It analyzed sectoral demands and priorities to ensure optimal utilization of resources.

3. Monitoring and Evaluation: The Planning Commission monitored the progress of various development programs and projects to assess their effectiveness and impact. It evaluated the performance of different sectors and states and provided recommendations for improvement.

4. Inter-Ministerial Coordination: The commission facilitated coordination and cooperation among different ministries and departments to ensure effective implementation of development policies and programs. It acted as a bridge between the central government and state governments to promote cooperative federalism.

5. Policy Formulation: The Planning Commission played a significant role in formulating policies related to economic development, poverty alleviation, infrastructure development, and social welfare. It provided inputs and recommendations to the government on various policy matters.

6. International Engagement: The commission represented India in international forums and negotiations related to development cooperation, aid, and economic partnerships. It helped in fostering bilateral and multilateral relationships for the benefit of India's developmental agenda.

Conclusion:
The Planning Commission of India was a crucial institution that played a pivotal role in guiding the process of economic planning and development in the country. It formulated five-year plans, allocated resources, monitored progress, and coordinated efforts to achieve the goals of balanced growth, poverty reduction, and social welfare. The commission's dissolution in 2014 marked a shift in India's approach to planning and development, with the establishment of the NITI Aayog as a successor.