Colonialism is the foundation, establishment, maintenance, acquisition, expansion, and the development of colonies in one part of the world by another country from another part of the world. It is a process whereby the nation claims control over the colony and its lands; and with it, the social structure, government, and economics of the colony. They are changed as the colony expands and develops. Colonialism also is the different relationships between the mother country and the colony, but also between the colonists and the native population. It is also linked to the two nationalist beliefs that drive countries to colonialism: mercantilism and imperialism.