1919. The war years were a time of harsh laws against sedition and freedom of speech and action across the British Empire. Resources needed by Britiain and their allies were taken from those countries that lived under the Britian's flag and rule. By 1919 those future nations had become further politicised and wanted independence or a better relationship with the British Government. 
However, the reaction of the British Government and their representatives in those countries was either to ignore that chngine environment or to be brutal about suppressing demands.
These reactions led to unrest (for example in Ceylon), revolt (Egypt), independence movements (such as the Sinn Fein and the declaration of Irish independence) and death (The Amritsar Massacre in the Punjab).
Those events have set a political and strategic climate that has dominated the world ever since.
This video is a precurssor to individual consideration of each of those flashpoint nations.