What were the problems faced by India after it's independence?

The correct options are
B India had a large number of refugees due to its partition.
C India faced a challenge to build a strong political system.
D India had 526 princely states to integrate.
India faced numerous problems after its independence. Due to the partition, approximately 80 lakh refugees came back to India from Pakistan. The re-habilitation of these refugees was a major challenge. The second challenge was to integrate the 562 small and big princely states into United India. The third major challenge was to build a stable political system to fulfil the expectations and hopes of the people and develop India into a strong nation.