What is the colonialism?

The dominance of one country over another, either by direct rule or by economic or military influence.

Greed is one answer, but it may in fact be a biologically-induced response based upon the adapted learning history of a violence-experienced population due to excess carrying-capacities.

is the process by which Britain colonies African nation and the rest of the other nation

A system by which countries set up colonies to secure sources of raw materials and market for their products .but many Muslims were killed