Identify the three main challenges faced after Independence by India achieving

A. Achieving integration of the territory of India post partition of the country given the diversities in our society.

B. Focusing the development of NE states

C. Developing democratic practices in accordance with the constitution

D. Promoting the marine life of the southern region

E. Establishing the principle of equality and special protection to socially disadvantaged groups and religous and cultural communities

Choose the correct answer from the options given below: