COLONIZATION
colonization, colonisation, settlement
(noun) the act of colonizing; the establishment of colonies; “the British colonization of America”
Source: WordNet® 3.1
Noun
colonization (countable and uncountable, plural colonizations)
The process of establishing a colony.
(social sciences) The process of colonizing or taking over.
Source: Wiktionary
Col`o*ni*za"tion, n. Etym: [Cf. F. colonisation.]
Definition: Tha act of colonizing, or the state of being colonized; the
formation of a colony or colonies.
The wide continent of America invited colonization. Bancroft.
Source: Webster’s Unabridged Dictionary 1913 Edition