European imperialism usually led to colonies being mistreated, and a lowered quality of life (while an upgrade of lifestyle through economics & structuring of the society from their original state). This usually leads to a period of tolerance, and then a uprising, which was usually a bloody revolution (before the 1900s). This soon led to a more peaceful revolt in the Africa's and the South America's after World War II. Of course, the Asia's continued to have bloody independences after WWII, as seen in Vietnam. Most of these revolutions occur because the natives were fed up with having a oppressive government or being mistreated by foreigners. The colonies generally want peace and freedom which was given to them sooner or later.
