It was inspired by President Subhas C Bose.... commander in chief of the INA.

The British had one way of controlling India.... using the British Indian military. When the British Indian military began rebelling against the Crown... the British parliament under Labour Prime Minister Clement Atlee must've realized that they can no longer rule India properly... and that there might be a military coup/revolution backed by the Soviets or the Americans.

So as result the British Empire decided to grant India its "Freedom"/"independence". But while they did it.... they placed incompetent puppets like Nehru in charge.... and also by partitioning the Indian nation into multiple pieces. The British were the ones who helped unify India as one country when the came.... and as they left.... they decided to tear it up.