Colonialism

The general term

Colonialism is a general term that usually refers to the establishment and maintenance of a range of practices and relations of colonization, installing coloniality and possibly colonies, for the purposes of imperialist control and exploitation.

However, there is no clear definition of colonialism and definitions may vary depending on the use of the term and context. See for example the entries in various onlne encyclopaedias, e.g:

https://en.wikipedia.org/wiki/Colonialism

https://www.nationalgeographic.com/culture/article/colonialism

https://plato.stanford.edu/entries/colonialism/