Answer :
European colonialism and colonization was the policy or practice of acquiring full or partial political control over other societies and territories, founding a colony, occupying it with settlers, and exploiting it economically.
It is colonialism because it is just like gentrification. Someone colonizes a certain area, and gentrifies it. colonialism is the act of gentrifying a particular area. Here is a definition: the policy or practice of acquiring full or partial political control over another country, occupying it with settlers, and exploiting it economically. btw Hope this helps 100% :D