The process of decolonization coincided with the new Cold War between the Soviet Union and the United States, and with the early development of the new United Nations. Decolonization was often affected by superpower competition, and had a definite impact on the evolution of that competition.
The main cause of decolonization of Asia was due to the fact every country that have been colonized and ruled under the thumb by the colonizing powers have begun to think for themselves and raised their consciousness through the bitter experience and suffering of WW2 and realize that it is about time they take back the charge of their own country.
The Colonial Masters once realised that the people no longer are subdued and compliant and that there is no more opportunity to exploit them or their resources and if they stayed any longer, they not only have to expend funds to hold the countries but a revolt can be costly in terms of lives and expenditure.
So the easiest way out for them would be to abandon ship and in as quick and as dignified a way as possible.
No country can subjugate another for long if the people unite in opposition as one.
