Answer:
Because this gave a colony much freedom, which would have more strength to generate a rebellion and organize separatist and independent independence movements.
Step-by-step explanation:
I believe that you are talking about England's colonialist policy in Indian territory.
As Indians sought greater participation in the formulation of national policies, England allowed a national political organization to be created where members would be Indians. The problem is that this gave a certain autonomy and freedom in India, which could seek the power to launch separatist movements that sought independence from the country and the breaking of subordination to the English crown. This made England regret allowing this organization to be created.