Colonialism is the pursuing, establishing and maintaining of control and exploitation of people and of resources by a foreign group. Colonizers monopolize political power and hold conquered societies and their people to be inferior to their conquerors in legal, administrative, social, cultural, or biological terms. While frequently advanced as an imperialist regime, colonialism can also take the form of settler colonialism, whereby colonial settlers invade and occupy territory to permanently replace an existing society with that of the colonizers, possibly towards a genocide of native populations.