Multiculturalism describes the existence, acceptance, or promotion of multiple cultural traditions within a single jurisdiction, usually considered in terms of the culture associated with an ethnic group. This can happen when a jurisdiction is created or expanded by amalgamating areas with two or more different cultures (e.g. French Canada and English Canada) or through immigration from different jurisdictions around the world (e.g. Australia, Brazil, Mexico, the United States, and many other countries).
Multicultural ideologies or policies vary widely, ranging from the advocacy of equal respect to the various cultures in a society, to a policy of promoting the maintenance of cultural diversity, to policies in which people of various ethnic and religious groups are addressed by the authorities as defined by the group to which they belong.