Answer:
Universality.
Explanation:
This can be said to being dynamic, philosophical and not bias among a group who accept themselves a members who share their problems amongst themselves and know they are not isolated.
One factor is that most European nations were just too poor after the war to carry the huge expenses of maintaining their colonies. Another is that many colonies were acquired strictly for strategic reasons, like coaling or controlling certain maritime trading routes, and they were simply no longer needed.
