Answer:
In order to gain more power.
Explanation:
India and Pakistan were so concerned about winning the accession of the various princely states because they want to increase their area and resources. Both of the countries wanted to include the princely states in their country due to gain more power in the region. These princely states were rich in resources and these countries earn more money from their resources so both were very concern about the winning the accession of the various princely states.